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Fitbit One Review | 171 Data compared

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  • Avg. price in UK: ~£90
  • Avg. price in US: ~$100
  • Form factor: clip-on
  • Battery life: 14 days
  • Screen size: ?

Fitbit One review. Compare 171 technical specifications and user reviews to see how it ranks among fitness trackers and if it is worth buying.

6.5

Overall score

What it is: An overall evaluation of the fitness tracker's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best fitness trackers on the market.

Score components:

80.0%

6.5

Technical Score

20.0%

?

User score

Good
6.5

Technical Score

What it is: An assessment of the fitness tracker's technical performance, covering eight key areas: health tracking, sports features, connectivity, display, battery, smart features, design, and app support.

When it matters: When you want to compare fitness trackers based on technical performance and available features.

Score components:

20.0%

7.1

Sports & Navigation

20.0%

5.8

Battery

18.0%

5.0

Health

18.0%

6.9

Display

8.0%

5.2

Smart Features

8.0%

8.7

App & Wellness

4.0%

8.1

Connectivity

4.0%

7.6

Design & Durability

Good
?

User score

What it is: A rating that combines user reviews and the total number of reviews received by the fitness tracker.

When it matters: When you want to know how a fitness tracker performs in daily use and how reliable it remains over time according to user feedback.

Score components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 5.3
    Swimming

    Score components:

    28.0%

    9.0

    ATM rating

    24.0%

    4.0

    Open-water swim mode

    18.0%

    1.2

    Waterproof depth rating

    15.0%

    4.0

    GPS

    15.0%

    6.5

    Battery life

  • 8.6
    Kids

    Score components:

    30.0%

    6.5

    Battery life

    25.0%

    10

    Weight

    20.0%

    9.0

    ATM rating

    15.0%

    9.0

    Screen size

    10.0%

    10

    Price

  • No image
No image

Best prices in UK

    N/A~ £90

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Fitbit One is a compact, clip-on fitness tracker measuring 0.76 x 1.89 x 0.38 inches and weighing just 0.28 ounces, featuring a MEMS 3-axis accelerometer and an altimeter to monitor steps, distance, calories, and floors climbed. Its core characteristics include a monochrome OLED display that cycles through real-time stats and a vibrating motor for silent alarms, all powered by a lithium-ion polymer battery lasting 7 to 14 days. Main pros include its highly discreet form factor, exceptional battery life compared to wrist-based models, and accurate stair tracking. However, it is water-resistant rather than waterproof, uses a proprietary charging cable, and its clip-on design makes it prone to being lost or accidentally left in pockets during laundry.

Technical Specifications of Fitbit One

Technical Score

What it is: An assessment of the fitness tracker's technical performance, covering eight key areas: health tracking, sports features, connectivity, display, battery, smart features, design, and app support.

When it matters: When you want to compare fitness trackers based on technical performance and available features.

Score components:

20.0%

?

Sports & Navigation

20.0%

?

Battery

18.0%

?

Health

18.0%

?

Display

8.0%

?

Smart Features

8.0%

?

App & Wellness

4.0%

?

Connectivity

4.0%

?

Design & Durability

6.5
Fitbit One has a technical score of 6.47 points, which is lower than 73.2% of fitness trackers.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the fitness tracker.

When it matters: When you want to know how a fitness tracker performs in daily use and how reliable it remains over time according to user feedback.

Score components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
What it is: An indicator based on the number of reviews received by the fitness tracker.
When it matters: When you prefer to buy a product chosen and reviewed by many other consumers.
1.0
Fitbit One has a popularity of 1 points, which is lower than 58.2% of products in this category.
Ratio quality/price

What it is: An indicator that combines the fitness tracker's overall rating with its cost.

When it matters: When you are looking for a fitness tracker with a good balance between quality and price.

Score components:

60.0%

6.5

Overall score

40.0%

10

Price

7.5
Fitbit One has a quality-to-price ratio of 7.5 points, which is lower than 71.8% of products in this category.
Heart rate monitor
What it is: Sensor that measures heart rate in real time.
When it matters: When you care about live heart-rate feedback during training or resting trends outside of workouts.

Importance: HIGH

no
Fitbit One does not support heart rate monitoring. 60.3% of fitness trackers support heart rate monitoring.
Resting heart rate
What it is: Measures heart rate while resting.
When it matters: When deeper insight into sleep quality, recovery, or overall readiness matters more than raw numbers alone.

Importance: MEDIUM

no
Fitbit One does not support Resting heart rate. 48.5% of fitness trackers support Resting heart rate.
Fast/slow heart rate alerts
What it is: Alerts for heart rates that are too fast or too slow.
When it matters: When you want the tracker to warn you about unusual changes instead of only logging them.

Importance: LOW

no
Fitbit One does not support high and low heart rate alerts. 33.7% of fitness trackers support high and low heart rate alerts.
Irregular heart rate alerts
What it is: Warns of irregular or abnormal heart rhythms.
When it matters: When you want the tracker to warn you about unusual changes instead of only logging them.

Importance: LOW

no
Fitbit One does not support irregular heart rate alerts. 11.5% of fitness trackers support irregular heart rate alerts.
Blood oxygen sensor
What it is: Sensor that measures blood oxygen saturation.
When it matters: When blood oxygen readings are part of the health picture you want from the device instead of relying on heart rate and step count alone.

Importance: MEDIUM

no
Fitbit One does not have a blood oxygen sensor. 26.1% of fitness trackers have a blood oxygen sensor.
Show more
GPS
What it is: Satellite navigation capability for positioning and tracking.
When it matters: When you train outdoors and want pace, distance, and route tracking without depending completely on your phone.

Importance: LOW

no
Fitbit One does not have GPS. 11% of fitness trackers have GPS.
Satellite systems supported
What it is: States which satellite navigation systems the device can use for positioning.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Fitbit One supports no satellite systems which is less versatile than that of 12.2% of fitness trackers and the same as that of 87.8% of fitness trackers.
no satellite positioning support.
GNSS bands supported
What it is: Number and type of GNSS frequency bands supported.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Fitbit One does not support advanced GNSS bands. 8.9% of fitness trackers support advanced GNSS bands.
Galileo support
What it is: Supports Galileo satellite system.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Fitbit One does not support Galileo. 4.9% of fitness trackers support Galileo.
Acquires GPS faster
What it is: Shows whether the tracker includes features that help it lock onto satellite positioning more quickly at the start of an outdoor activity.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Fitbit One does not support faster GPS acquisition. 7.2% of fitness trackers support faster GPS acquisition.
Show more
Notifications
What it is: Delivers smartphone notifications on the watch.
When it matters: When getting calls, messages, and app alerts on your wrist saves you from checking your phone constantly.

Importance: MEDIUM

no
Fitbit One does not support notifications. 73% of fitness trackers support notifications.
Vibrating alerts
What it is: Provides vibration-based notifications and alerts.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

yes
Fitbit One supports vibration alerts. 16.3% of fitness trackers support vibration alerts.
Call control
What it is: Allows control of phone calls from the device.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

no
Fitbit One does not support call controls. 41.1% of fitness trackers support call controls.
Call answering
What it is: Allows answering calls directly from the device.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

no
Fitbit One does not support call answering. 1% of fitness trackers support call answering.
Calendar sync
What it is: Syncs calendar events with the connected device.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

no
Fitbit One does not support calendar sync. 19.9% of fitness trackers support calendar sync.
Show more
Activity reports
What it is: Generates summaries and insights from activity data.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

yes
Fitbit One supports activity reports. 5.7% of fitness trackers support activity reports.
via Fitbit app
Goal setting
What it is: Allows setting personal fitness or activity goals.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

yes
Fitbit One supports goal setting. 2.4% of fitness trackers support goal setting.
Achievements
What it is: Rewards progress and completed milestones.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

yes
Fitbit One supports achievements. 24.3% of fitness trackers support achievements.
Inactivity alerts
What it is: Alerts when the user has been inactive for too long.
When it matters: When account rules, app costs, exports, or software flexibility affect whether the ecosystem suits you long term.

Importance: LOW

no
Fitbit One does not support inactivity alerts. 76.9% of fitness trackers support inactivity alerts.
Coaching
What it is: Provides guided training and workout advice.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

no
Fitbit One does not support coaching. 33% of fitness trackers support coaching.
Show more
Bluetooth version
What it is: Version of Bluetooth supported by the device.
When it matters: When wireless stability, pairing quality, and long-term phone compatibility matter more than Bluetooth being a simple checkbox.

Importance: LOW

Good value: >=5.0

4.0
Fitbit One supports Bluetooth 4.0 which is newer than in 5.1% of fitness trackers and equal to that in 51.5% of fitness trackers.
Maximum Bluetooth range
What it is: States the maximum Bluetooth connection range supported under normal conditions.
When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

Importance: LOW

Good value: >=10 m

20 m
Fitbit One offers a Bluetooth range of 20 m which is higher than that of 84.6% of fitness trackers and equal to that of 5.4% of fitness trackers.
NFC
What it is: Supports near-field communication for contactless features.
When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

Importance: LOW

no
Fitbit One does not have NFC. 10.1% of fitness trackers have NFC.
Wi-Fi connectivity
What it is: Connects to wireless internet networks.
When it matters: When the tracker should sync, update, or download data directly without always routing everything through the phone.

Importance: LOW

no
Fitbit One does not support Wi-Fi. 1.8% of fitness trackers support Wi-Fi.
Wi-Fi version
What it is: Version of Wi-Fi standard supported.
When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

Importance: LOW

no
Fitbit One does not support modern Wi-Fi. 1% of fitness trackers support modern Wi-Fi.
Show more
Battery life
What it is: Total time the battery lasts on a full charge.
When it matters: When the tracker needs to last through travel, sleep tracking, long workouts, or several days between charges.

Importance: HIGH

Good value: >5 days

14 days
Fitbit One offers a battery life of 14 days which is longer than that of 60.4% of fitness trackers and equal to that of 13.9% of fitness trackers.
Battery life with GPS on
What it is: Battery duration when GPS tracking is active.
When it matters: When you want fewer charging breaks during travel, longer workouts, sleep tracking, or continuous use.

Importance: LOW

Good value: >=8 hours

N/A
Battery life in training mode
What it is: Battery duration during active training sessions.
When it matters: When you want fewer charging breaks during travel, longer workouts, sleep tracking, or continuous use.

Importance: LOW

N/A
Battery life in power-saving mode
What it is: Battery duration when using power-saving mode.
When it matters: When you want fewer charging breaks during travel, longer workouts, sleep tracking, or continuous use.

Importance: LOW

N/A
Battery capacity
What it is: Energy storage capacity of the battery.
When it matters: When you want rough battery context behind the runtime claim instead of trusting the advertised hours alone.

Importance: MEDIUM

Good value: >=100 mAh

60 mAh
Fitbit One has a battery capacity of 60 mAh which is lower than that of 81% of fitness trackers and equal to that of 2.8% of fitness trackers.
Show more
Display
What it is: Main interface showing information and metrics.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: LOW

yes
Fitbit One has a display. 24.1% of fitness trackers have a display.
Screen size
What it is: Physical size of the device’s display measured diagonally.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: MEDIUM

?
Display type
What it is: Technology used for the screen, such as AMOLED or LCD.
When it matters: When display technology affects contrast, color quality, power efficiency, or how premium the screen feels.

Importance: MEDIUM

OLED
Fitbit One uses OLED display technology which is more advanced than that of 53% of fitness trackers and the same as that of 21.8% of fitness trackers.
Monochrome OLED display.
Screen resolution
What it is: Total number of pixels displayed on the screen.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: MEDIUM

?
Pixel density
What it is: Number of pixels per inch determining screen sharpness.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: LOW

Good value: >=280 ppi

?
Show more
Form factor
What it is: Overall physical design and shape.
When it matters: When materials, shape, and build details affect comfort, durability, or how discreet the device feels.

Importance: LOW

clip-on
Hybrid design
What it is: Combines analog and digital display elements.
When it matters: When materials, shape, and build details affect comfort, durability, or how discreet the device feels.

Importance: LOW

no
Fitbit One does not support Hybrid design. 2.4% of fitness trackers support Hybrid design.
Designed for kids
What it is: Indicates whether the fitness tracker is explicitly designed for children, with child-focused sizing, branding, safety limits, or kid-oriented activity features.
When it matters: This matters when you want a tracker that is genuinely child-focused rather than just a smaller adult model.

Importance: LOW

no
Fitbit One is not designed for kids. 2.4% of fitness trackers are designed for kids.
No child-specific positioning found.
Replaceable watch band
What it is: Ability to replace the wristband with other styles.
When it matters: When strap comfort, fit, or the ability to swap bands matters for sport, style, or replacement.

Importance: LOW

yes
Fitbit One has a replaceable watch band. 24.4% of fitness trackers have a replaceable watch band.
Quick-release band system.
Band width
What it is: Width of the strap where it connects to the watch.
When it matters: When strap comfort, fit, or the ability to swap bands matters for sport, style, or replacement.

Importance: LOW

N/A
Show more

Fitbit One vs the average fitness tracker

  • 4 days longer battery life
    Fitbit One has a higher battery life than the average fitness tracker (14 days vs 10 days). The average fitness tracker has 10 days of battery life.
    What it is: Total time the battery lasts on a full charge.
    When it matters: When the tracker needs to last through travel, sleep tracking, long workouts, or several days between charges.

    Importance: HIGH

    Good value: >5 days

    Fitbit One has a higher battery life than the average fitness tracker (14 days vs 10 days). The average fitness tracker has 10 days of battery life.14 days vs 10 days
  • Tracks elevation
    Fitbit One supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
    What it is: Measures elevation gain and loss during activity.
    When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

    Importance: LOW

    Fitbit One supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • 63.7% lighter
    Fitbit One is lighter than the average fitness tracker (9.1 g vs 25 g). The average fitness tracker weighs 25 g.
    Clip-on module with clip.
    What it is: Weight of the device including strap.
    When it matters: When overall size, thickness, or weight affects comfort during all-day wear, sleep, or exercise.

    Importance: LOW

    Good value: <25 g

    Fitbit One is lighter than the average fitness tracker (9.1 g vs 25 g). The average fitness tracker weighs 25 g.9.07 g vs 25 g
  • Mac OS X compatible
    Fitbit One is compatible with Mac OS X, while the average fitness tracker is not. 27.5% of fitness trackers are compatible with Mac OS X.
    Via Fitbit Connect.
    What it is: Compatible with macOS devices.
    When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

    Importance: LOW

    Fitbit One is compatible with Mac OS X, while the average fitness tracker is not. 27.5% of fitness trackers are compatible with Mac OS X.
  • Built-in barometer
    Fitbit One has a barometer, while the average fitness tracker does not. 10.7% of fitness trackers have a barometer.
    What it is: Measures air pressure and elevation changes.
    When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

    Importance: LOW

    Fitbit One has a barometer, while the average fitness tracker does not. 10.7% of fitness trackers have a barometer.
  • 10 m longer Bluetooth range
    Fitbit One has a longer Bluetooth range than the average fitness tracker (20 m vs 10 m). The average fitness tracker offers a Bluetooth range of 10 m.
    What it is: States the maximum Bluetooth connection range supported under normal conditions.
    When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

    Importance: LOW

    Good value: >=10 m

    Fitbit One has a longer Bluetooth range than the average fitness tracker (20 m vs 10 m). The average fitness tracker offers a Bluetooth range of 10 m.20 m vs 10 m
  • Tracks calorie intake
    Fitbit One supports calorie intake tracking, while the average fitness tracker does not. 39.3% of fitness trackers support calorie intake tracking.
    Calorie intake can be logged in the official companion app.
    What it is: Logs daily calorie intake.
    When it matters: When tracking daily habits and body trends beyond workouts matters to your health routine.

    Importance: LOW

    Fitbit One supports calorie intake tracking, while the average fitness tracker does not. 39.3% of fitness trackers support calorie intake tracking.
  • Water intake tracking
    Fitbit One supports water intake tracking, while the average fitness tracker does not. 47% of fitness trackers support water intake tracking.
    Water intake can be logged in the official companion app.
    What it is: Tracks daily water consumption.
    When it matters: When tracking daily habits and body trends beyond workouts matters to your health routine.

    Importance: LOW

    Fitbit One supports water intake tracking, while the average fitness tracker does not. 47% of fitness trackers support water intake tracking.
  • Tracks elevation
    Fitbit One supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • Built-in barometer
    Fitbit One has a barometer, while the average fitness tracker does not. 10.7% of fitness trackers have a barometer.
  • 4 days longer battery life
    Fitbit One has a higher battery life than the average fitness tracker (14 days vs 10 days). The average fitness tracker has 10 days of battery life.
  • Mac OS X compatible
    Fitbit One is compatible with Mac OS X, while the average fitness tracker is not. 27.5% of fitness trackers are compatible with Mac OS X.
  • 10 m longer Bluetooth range
    Fitbit One has a longer Bluetooth range than the average fitness tracker (20 m vs 10 m). The average fitness tracker offers a Bluetooth range of 10 m.
  • 1 more physical buttons
    Fitbit One has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
  • 63.7% lighter
    Fitbit One is lighter than the average fitness tracker (9.1 g vs 25 g). The average fitness tracker weighs 25 g.
  • 1.35 mm thinner design
    Fitbit One is thinner than the average fitness tracker (9.7 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.
  • Tracks calorie intake
    Fitbit One supports calorie intake tracking, while the average fitness tracker does not. 39.3% of fitness trackers support calorie intake tracking.
  • Water intake tracking
    Fitbit One supports water intake tracking, while the average fitness tracker does not. 47% of fitness trackers support water intake tracking.

Total
Sports & Navigation
Battery
Connectivity
Smart Features
Design & Durability
App & Wellness
  • No heart rate monitoring
    Fitbit One does not support heart rate monitoring, while the average fitness tracker does. 60% of fitness trackers support heart rate monitoring.
  • No sleep reports
    Fitbit One does not support sleep reports, while the average fitness tracker does. 84.8% of fitness trackers support sleep reports.
  • No automatic activity detection
    Fitbit One does not support automatic activity detection, while the average fitness tracker does. 50.3% of fitness trackers support automatic activity detection.
  • No pace measurement
    Fitbit One does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
  • 0.5 hours longer charging time
    Fitbit One has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.
  • 45.5% smaller battery capacity
    Fitbit One has a lower battery capacity than the average fitness tracker (60 mAh vs 110 mAh). The average fitness tracker has 110 mAh of battery capacity.
  • No notifications
    Fitbit One does not support notifications, while the average fitness tracker does. 72.6% of fitness trackers support notifications.
  • No stopwatch
    Fitbit One does not have a stopwatch, while the average fitness tracker does. 58.4% of fitness trackers have a stopwatch.
  • 49 m lower waterproof depth rating
    Fitbit One has a lower waterproof depth rating than the average fitness tracker (1 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.
  • 7.2 mm greater height
    Fitbit One is taller than the average fitness tracker (48 mm vs 40.8 mm). The average fitness tracker has a height of 40.8 mm.
  • 20 °C higher minimum operating temperature
    Fitbit One has a higher minimum operating temperature than the average fitness tracker (-20 °C vs 0 °C). The average fitness tracker supports a minimum operating temperature of 0 °C.
  • 4 older release date
    Fitbit One was released earlier than the average fitness tracker (2,012 vs 2,016). The average fitness tracker was released in 2,016.
    November 2012
  • No inactivity alerts
    Fitbit One does not support inactivity alerts, while the average fitness tracker does. 76.5% of fitness trackers support inactivity alerts.
  • Ads in app
    Fitbit One shows ads in the app, while the average fitness tracker does not. 50.6% of fitness trackers have an ad-free app.
  • No heart rate monitoring
    Fitbit One does not support heart rate monitoring, while the average fitness tracker does. 60% of fitness trackers support heart rate monitoring.
    What it is: Sensor that measures heart rate in real time.
    When it matters: When you care about live heart-rate feedback during training or resting trends outside of workouts.

    Importance: HIGH

    Fitbit One does not support heart rate monitoring, while the average fitness tracker does. 60% of fitness trackers support heart rate monitoring.
  • No automatic activity detection
    Fitbit One does not support automatic activity detection, while the average fitness tracker does. 50.3% of fitness trackers support automatic activity detection.
    What it is: Automatically recognizes and records physical activities.
    When it matters: When you want common workouts captured even on days when you forget to start tracking manually.

    Importance: MEDIUM

    Fitbit One does not support automatic activity detection, while the average fitness tracker does. 50.3% of fitness trackers support automatic activity detection.
  • No pace measurement
    Fitbit One does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
    What it is: Measures running or walking speed.
    When it matters: When you want the tracker to capture more workouts and training details with less manual effort.

    Importance: MEDIUM

    Fitbit One does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
  • No notifications
    Fitbit One does not support notifications, while the average fitness tracker does. 72.6% of fitness trackers support notifications.
    What it is: Delivers smartphone notifications on the watch.
    When it matters: When getting calls, messages, and app alerts on your wrist saves you from checking your phone constantly.

    Importance: MEDIUM

    Fitbit One does not support notifications, while the average fitness tracker does. 72.6% of fitness trackers support notifications.
  • 0.5 hours longer charging time
    Fitbit One has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.
    What it is: Time required for a full charge.
    When it matters: When short charging windows matter and you do not want the tracker off your wrist for too long.

    Importance: MEDIUM

    Fitbit One has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.2 hours vs 1.5 hours
  • No sleep reports
    Fitbit One does not support sleep reports, while the average fitness tracker does. 84.8% of fitness trackers support sleep reports.
    What it is: Shows whether the companion platform turns sleep data into reports or summaries instead of only raw nightly logs.
    When it matters: When you want sleep data turned into clearer nightly summaries instead of digging through raw charts on your own.

    Importance: LOW

    Fitbit One does not support sleep reports, while the average fitness tracker does. 84.8% of fitness trackers support sleep reports.
  • 45.5% smaller battery capacity
    Fitbit One has a lower battery capacity than the average fitness tracker (60 mAh vs 110 mAh). The average fitness tracker has 110 mAh of battery capacity.
    What it is: Energy storage capacity of the battery.
    When it matters: When you want rough battery context behind the runtime claim instead of trusting the advertised hours alone.

    Importance: MEDIUM

    Good value: >=100 mAh

    Fitbit One has a lower battery capacity than the average fitness tracker (60 mAh vs 110 mAh). The average fitness tracker has 110 mAh of battery capacity.60 mAh vs 110 mAh
  • 49 m lower waterproof depth rating
    Fitbit One has a lower waterproof depth rating than the average fitness tracker (1 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.
    What it is: Maximum depth the device can withstand underwater.
    When it matters: When you plan to swim, shower, dive, or use the tracker regularly around water.

    Importance: LOW

    Good value: >=50 m

    Fitbit One has a lower waterproof depth rating than the average fitness tracker (1 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.1 m vs 50 m
Total
Overall
Health
Sports & Navigation
Battery
Smart Features
Design & Durability
App & Wellness

Graphic comparison of Fitbit One and

Attribute category
Attribute
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Third-party reviews

What customers like about Fitbit One?

  • Discreet and compact clip-on design that is easy to conceal on clothing
  • Highly accurate for counting steps and tracking flights of stairs climbed
  • Long-lasting battery life, typically lasting between 5 to 7 days per charge
  • Bright OLED screen provides immediate viewing of stats and motivational messages
  • Syncs wirelessly and easily with both smartphones and computers
  • Strong community support and integration with various third-party health apps
  • Includes a silent vibrating alarm that wakes the user without disturbing others

What customers dislike about Fitbit One?

  • Small size makes it very easy to lose or accidentally leave in clothes sent to the laundry
  • Sleep tracking is not automatic and requires manually pressing a button and wearing an uncomfortable wristband
  • Device is only splash-proof and can be easily damaged if submerged in water or put through a washing machine
  • Limited tracking for non-stepping activities like cycling, weightlifting, or yoga
  • Lacks modern features like built-in GPS and heart rate monitoring
  • The silicone clip holder can stretch over time, increasing the risk of the device falling out
  • Recent user reports indicate increasing synchronization issues with newer mobile operating systems

Expert reviews

A
akanekinomoto.com
12/07/2013
Fitbit One — the ultimate review Would you like to compare the battery life or accuracy of the Fitbit One with other clip-on trackers?

The Fitbit One is praised as a highly reliable activity tracker featuring an easy-to-read dashboard, stellar battery life lasting nearly a week, and a practical sleep wristband design. The review highlights the device's accuracy in tracking daily activity and efficient two-hour charging time as major pros. Conversely, the review identifies the on-screen growing flower icon as a...Read more

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cnet.com
22/04/2013
My life with the Fitbit One activity tracker - CNET

However, the reviewer highlights significant drawbacks for users who engage in "non-step" or low-impact activities, such as paddleboarding, which fail to register automatically. While manual logging is available to correct missed exercises, the system is clunky and requires users to manually look up or estimate calorie counts instead of seamlessly linking timed activities to the...Read more

C
cnet.com
30/04/2013
Fitbit One review: Powerful fitness tracker, weak design - CNET

The Fitbit One review by CNET highlights a powerful $99.95 fitness tracker that excels in its advanced health and data analytics but is severely hindered by a problematic physical design. On the positive side, reviewer Brian Bennett praises the device as a feature-rich pedometer capable of accurately tracking steps, distance traveled, calories burned, stairs climbed, and sleep...Read more

T
t3.com
29/01/2013
Fitbit One review - T3

Fitbit One Review Summary The Fitbit One is a lightweight, 8-gram wireless fitness tracker designed to replace the Fitbit Ultra with several notable hardware upgrades. It utilizes an internal accelerometer and altimeter to track standard movement data, including steps taken, distance covered, calories burned, and floors climbed. Standout pros highlighted in the review include its...Read more

T
techradar.com
12/12/2012
Fitbit One review | TechRadar

The Fitbit One is a versatile, lightweight fitness tracker designed to help users monitor their daily health metrics, including steps taken, distance travelled, calories burned, and flights of stairs climbed. It improves upon its predecessors by introducing a single-line OLED display for real-time daily stats, an internal rechargeable battery, and low-power Bluetooth 4.0 for...Read more

P
programmingzen.com
12/03/2021
An In-depth Review of Fitbit One, Fitbit Aria, and Fitbit Premium Are you looking for a comparison of the Fitbit One against more modern clip-on track...

The Fitbit Aria scale features a beautiful, button-less aesthetic and seamlessly updates your online weight profile, but it proves highly inaccurate and inconsistent for heavier individuals with uneven weight distribution. Meanwhile, the optional Fitbit Premium service costs $49.99 a year and provides tailored demographic benchmarks, activity trainers, and data export tools. While...Read more

G
goughlui.com
01/07/2016
Review: Fitbit One Wireless Activity + Sleep Tracker

The Fitbit One is a basic, pocket-clipped or belt-worn fitness tracker retailing at AU$129.95 that features a compact, burgundy design and a unique desktop-compatible wireless sync dongle alongside standard mobile app integration. On the positive side, it features a clear OLED screen that displays the time, alarms, and daily stats, and it offers accurate step counting (even when...Read more

G
gadfit.com
24/11/2013
Fitbit One Review - Fitness Trackers - GadFit

The Fitbit One is a clip-on fitness tracker priced at $99.95 that offers exceptional data accuracy for walking, jogging, and running, registering over 95% accuracy in tests. Designed to be worn on the hip using a firm silicone and metal belt clip, it features a crisp, bright display that illuminates from a dark base, though it can become slightly dim under direct sunlight. The...Read more

G
gizmodo.com
24/10/2012
Fitbit One Review: A Great Way to Monitor Your Wretched Life | Gizmodo

The Gizmodo review by Brent Rose evaluates the Fitbit One, a $100 clip-on fitness monitor designed to track daily physical activity and sleep quality. A major standout feature of the device is its built-in altimeter, which differentiates it from standard pedometers by accurately estimating calories burned while climbing stairs or hills. Reviewers also praised its premium physical...Read more

O
outdoorgearlab.com
11/11/2016
Fitbit One Review | Tested & Rated - Outdoor Gear Lab

The Fitbit One is a comprehensive, clip-on pedometer praised for its unique combination of sleep tracking, a robust smartphone app, and a functional on-device digital screen. It stands out as an easy choice for an Editors' Choice Award because no other tested device matches its extensive data set and immediate data visibility. The device features a tiny, rounded profile that easily...Read more

T
techgearlab.com
11/01/2017
Fitbit One Review | Tested & Rated - TechGearLab

The Fitbit One is a minimalistic, clip-on fitness tracker that earned the "Top Pick for Clip-On" award from TechGearLab for its outstanding ergonomics and step accuracy. Typically worn on a waistband or pocket, it averaged just 0.1% off in distance and step trials, making it nearly immune to the false step triggers common in wrist-based models. Major pros highlighted in the review...Read more

E
expertreviews.co.uk
06/10/2016
Fitbit One review: Discreet step tracking away from the wrist | Expert Reviews

In his Expert Reviews article, Alan Martin provides a detailed evaluation of the Fitbit One, a clip-on fitness tracker originally released in 2013. Priced at £80, the device serves as a highly discreet alternative to ostentatious wrist-based wearables, making it perfect for users who want to monitor their daily strolls without a fashion statement. The core strengths of the tracker...Read more

F
feelingfit.info
14/08/2014
A Detailed Review of the Fitbit One From A Long-Time User

The Feeling Fit review highlights the Fitbit One as a highly effective, affordable, and discreet activity tracker praised for its compact size, which allows for easy concealment on clothing. It offers excellent accuracy in tracking steps, distance, and calories, while the reviewer commends Fitbit's compassionate customer service. A notable disadvantage identified is the, at times,...Read more

U
uk.pcmag.com
16/05/2014
Fitbit One - PCMag UK

The Fitbit One is a highly capable, clip-on fitness tracker that automates overall health tracking for non-athletes. It acts as a super-smart pedometer that accurately measures steps taken, distance travelled, calories burned, and flights of stairs climbed via an integrated accelerometer and altimeter. It boasts an updated, compact design with a bright OLED display, a removable...Read more

C
connect.de
23/05/2014
Fitbit One Fitness Tracker Review - Connect

The Fitbit One is a compact and lightweight activity tracker that achieves an overall "Very Good" rating (430 out of 500 points) from connect. Unlike the brand's bracelet models, this device features a prominent, easy-to-read OLED display that provides essential real-time activity metrics directly on the tracker without needing a smartphone connection. The review highlights its high...Read more

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N
newgadgets.de
20/07/2013
Fitbit One Review – The Quantifiable Self

The Fitbit One is a pocket-sized fitness tracker that accurately logs daily physical activity, including step counts, distance travelled, calories burned, and elevation (stairs climbed). The reviewer notes that the device acts as a powerful visual motivator, using a system of virtual badges, custom weekly goals, and an on-screen expanding flower icon to successfully push users to...Read more

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M
marathonfitness.de
21/02/2026
Fitbit One Review & Experience: The Best Activity Tracker?

The Fitbit One is a lightweight, 8-gram activity tracker that stands out for its high precision, discrete design, and long-lasting battery life. According to a c't magazine test cited in the review, it operates with a remarkably low margin of error of just 0.8%, making it as accurate "as a Swiss watch movement". Unlike wrist-worn competitors that are prone to registering false...Read more

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D
digitec.ch
06/07/2017
Fitbit long-term review: Which model passes the endurance test?

This long-term review from Digitec evaluates the Fitbit Flex, Alta, and Charge 2 over six months, noting that while the Flex is lightweight, its lack of a screen and reliance on LED lights make it less appealing, and the app's requirement for active GPS synchronization is frustrating. The Charge 2 is highlighted as the winner, praised for its week-long battery life, continuous heart...Read more

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S
stuffi.fr
13/01/2013
Fitbit One: A Flex-Like Tracker That Clips to Your Belt

The reviewed product is the Fitbit One, a lightweight 8-gram clip-on activity tracker priced at €99.95, which serves as a discreet alternative to wristbands. Key pros highlighted in the review include its bright OLED display that allows users to view real-time metrics in the dark, unlike the basic LED indicators on the competing Fitbit Flex. The device offers comprehensive health...Read more

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L
leclaireur.fnac.com
13/08/2013
Fitbit One Tracker: Because You're Worth It", "Fitbit One Fitness Tracker: Because Your Health is Worth It

The Fnac review describes the Fitbit One as a comprehensive, user-friendly, and discreet health-tracking device. It evaluates key features including its step counting, floor climbing, distance tracking, calorie burn estimation, and sleep monitoring, which includes an integrated silent alarm designed to wake the user without disturbing their partner. Structurally, the reviewer...Read more

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L
lesnumeriques.com
02/03/2013
Fitbit One activity tracker review: let the tracking begin

The Les Numériques review of the Fitbit One gives the clip-on activity tracker a perfect 5 out of 5 stars rating, praising it as a highly successful device designed to motivate users to achieve daily fitness and calorie goals. The reviewer highlights several major advantages, including its highly readable OLED display, compact dimensions, and easy-to-use operation. Functionally, the...Read more

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L
lesnumeriques.com
02/03/2013
Fitbit One Review - The activity tracker that follows you even at night

The Les Numériques review awards the Fitbit One a perfect 5 out of 5 stars, celebrating it as a major upgrade from the disappointing Fitbit Zip and a highly accurate tool to motivate daily physical activity. The reviewer highlights several standout pros, notably its exceptionally small dimensions and feather-light 8-gram weight, making it incredibly discreet. Tech-wise, it features...Read more

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E
emilcar.es
27/05/2013
My Fitbit Experience

The author reviews the Fitbit One after six weeks of use, highlighting it as an effective, highly motivating pedometer designed for daily activity tracking. It is praised for its discreet clip design, excellent integration with a competitive social network of friends, and its powerful software available via web and iPhone. Key tracking features include accurate step counting—set to...Read more

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