OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Fitness trackers Methodology v3.0
Fitness trackers Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Fitness trackers Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Fitness trackers Methodology v3.0

Fitbit One review: 163 specs compared

Avg. price:~£90Battery life:14 daysScreen size:?Heart rate monitor:noGPS:noWaterproof depth rating:1 m

Fitbit One Review: Compare 163 technical specifications and 30 expert and video reviews to see how this product ranks in the Fitness trackers category and whether it is worth buying.

Fitbit One
7.3/10

Overall score

Score
7.3/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, best-of lists, expert reviews and owners.
How we count it
Parts: Technical score 35%, List score 30%, Reviews score 25%, Sentiment score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 50% of models
Score components

35%

6.3

Technical score

30%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

25%

8.1

Reviews score

10%

8.2

Sentiment score

▲Better than 50% of fitness trackers
8.1

Value for money

Value for money
8.1/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
▼ Worse than 54% of models
Score components

70%

7.3

Overall score

30%

10

Price

▼Worse than 54%
6.3

Technical score

Technical score
6.3/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 82% of models
Score components

20%

6.6

Sports

20%

4.9

Battery

18%

5.1

Health

18%

7.1

Display

8%

5.5

Smart functions

8%

8.6

Wellness

4%

8.1

Connectivity

4%

7.6

Design

▼Worse than 82%
8.1

Reviews score

Reviews score
8.1/ 10
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.2 for now.
Share: Reviews count 25% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 79% of models

80%

8.0

Average grade

20%

8.4

Popularity

Grades by review (30)
23 reviews: 10 with a printed score, 13 estimated from the review. 7 video reviews, each counting half as much as a written test. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
▲Better than 79%
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 30% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
  • fitbit-one
  • fitbit-one
  • fitbit-one
  • fitbit-one
  • fitbit-one
fitbit-one
fitbit-one
fitbit-one
fitbit-one
fitbit-one
Where to buy
    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.

What reviewers say about the Fitbit One

Based on 10 · 7

Small and discreet with reliable sleep and step tracking, but reviewers say it struggles with workouts and doesn't always last.
Praised
Mixed views
Criticised
Pick a topic to see who said what

What owners say about the Fitbit One

Based on 89 owners sharing their experience in online comments

48%positive1%mixed51%negative

Owners value motivating, comfortable tracking, while unreliable readings, software problems, and device failures frustrate many.

What owners dislike

  • Owners say the tracker stops working after being washed or charged too long, and charging or rice tricks often fail to bring it back.15
  • Owners say the app and phone connection drop, syncing hangs, and workouts or data can vanish, especially after updates.12
  • Owners say it lacks swimming heart rate, elevation gain, heart rate zones, and some workout types, so it feels limited for serious training.8
  • Owners say heart rate readings lag during sprints and spike too high during running or dancing, and they often differ from chest straps.7
  • Owners say step counts are inconsistent, adding steps for arm movements, nose scratches, or sitting, and sometimes missing real walking.6
  • Owners say the calorie burn estimate is too high, often by hundreds of calories, and it can show calories burned before any exercise.6
  • Owners say sleep data misses night wake-ups, shows much less sleep than other devices, and smart alarms wake them at the wrong time.6
  • Owners say workouts sometimes do not save or auto-detect, especially gym and hybrid sessions, so stats get lost.4
  • Owners say the sleep band and clip can fall out, and the fasteners feel cheap, so they worry about losing it.4
  • Owners say swimming is poorly tracked, with no heart rate, no swim cardio points, and wrong lap or pool counts.3

Points mentioned by at least 3 owners, most mentioned first.

Loading category ranking...

Technical Specifications of fitness tracker Fitbit One

Technical score
Technical score
6.3/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 82% of models
Score components:

20%

6.6

Sports

20%

4.9

Battery

18%

5.1

Health

18%

7.1

Display

8%

5.5

Smart functions

8%

8.6

Wellness

4%

8.1

Connectivity

4%

7.6

Design

6.3
Reviews score
8.1
List score
?
Value for money
Value for money
8.1/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
▼ Worse than 54% of models
Score components:

70%

7.3

Overall score

30%

10

Price

8.1
Heart rate monitor
no
This fitness tracker does not support heart rate monitoring. 64.2% of fitness trackers support heart rate monitoring.
Resting heart rate
no
This fitness tracker does not support Resting heart rate. 53% of fitness trackers support Resting heart rate.
Fast/slow heart rate alerts
no
This fitness tracker does not support high and low heart rate alerts. 36.5% of fitness trackers support high and low heart rate alerts.
Irregular heart rate alerts
no
This fitness tracker does not support irregular heart rate alerts. 13.7% of fitness trackers support irregular heart rate alerts.
Blood oxygen sensor
no
This fitness tracker does not have a blood oxygen sensor. 32.2% of fitness trackers have a blood oxygen sensor.
Show more
What reviewers say
GPS
no
This fitness tracker does not have GPS. 12.7% of fitness trackers have GPS.
Satellite systems supported
no
This fitness tracker supports no satellite systems which is less versatile than that of 14.4% of fitness trackers and the same as that of 85.6% of fitness trackers.
no satellite positioning support.
GNSS bands supported
no
This fitness tracker does not support advanced GNSS bands. 8.4% of fitness trackers support advanced GNSS bands.
Galileo support
no
This fitness tracker does not support Galileo. 5.6% of fitness trackers support Galileo.
Acquires GPS faster
no
This fitness tracker does not support faster GPS acquisition. 8.1% of fitness trackers support faster GPS acquisition.
Show more
What reviewers say
Notifications
no
This fitness tracker does not support notifications. 72.7% of fitness trackers support notifications.
Vibrating alerts
yes
This fitness tracker supports vibration alerts. 14.3% of fitness trackers support vibration alerts.
Call control
no
This fitness tracker does not support call controls. 40.8% of fitness trackers support call controls.
Call answering
no
This fitness tracker does not support call answering. 0.9% of fitness trackers support call answering.
Calendar sync
no
This fitness tracker does not support calendar sync. 20.5% of fitness trackers support calendar sync.
Show more
Activity reports
yes
This fitness tracker supports activity reports. 5% of fitness trackers support activity reports.
via Fitbit app
Goal setting
yes
This fitness tracker supports goal setting. 2.5% of fitness trackers support goal setting.
Achievements
yes
This fitness tracker supports achievements. 23.8% of fitness trackers support achievements.
Inactivity alerts
no
This fitness tracker does not support inactivity alerts. 79.1% of fitness trackers support inactivity alerts.
Coaching
no
This fitness tracker does not support coaching. 36.4% of fitness trackers support coaching.
Show more
Bluetooth version
4
This fitness tracker supports Bluetooth 4 which is newer than in 4.6% of fitness trackers and equal to that in 47% of fitness trackers.
Maximum Bluetooth range
20 m
Market range: <9 m – >30 m
This fitness tracker offers a Bluetooth range of 20 m which is higher than that of 81.6% of fitness trackers and equal to that of 6.4% of fitness trackers.
NFC
no
This fitness tracker does not have NFC. 11.8% of fitness trackers have NFC.
Wi-Fi connectivity
no
This fitness tracker does not support Wi-Fi. 2.5% of fitness trackers support Wi-Fi.
Wi-Fi version
no
This fitness tracker does not support modern Wi-Fi. 0.9% of fitness trackers support modern Wi-Fi.
Show more
What reviewers say
Battery life
14 days
Market range: <5 days – >180 days
This fitness tracker offers a battery life of 14 days which is longer than that of 59.7% of fitness trackers and equal to that of 14.5% of fitness trackers.
Battery life with GPS on
N/A
Battery life in training mode
N/A
Power-saving battery life
N/A
Battery capacity
60 mAh
Market range: <45 mAh – >225 mAh
This fitness tracker has a battery capacity of 60 mAh which is lower than that of 83.5% of fitness trackers and equal to that of 2.4% of fitness trackers.
Show more
What reviewers say
Display
yes
This fitness tracker has a display. 26.3% of fitness trackers have a display.
Screen size
?
Display type
OLED
This fitness tracker uses OLED display technology which is more advanced than that of 54.6% of fitness trackers and the same as that of 19.1% of fitness trackers.
Monochrome OLED display.
Screen resolution
?
Pixel density
?
Show more
What reviewers say
Form factor
clip-on
Hybrid design
no
This fitness tracker does not support Hybrid design. 2.1% of fitness trackers support Hybrid design.
Designed for kids
no
This fitness tracker is not designed for kids. 3.3% of fitness trackers are designed for kids.
Replaceable watch band
yes
This fitness tracker has a replaceable watch band. 23.4% of fitness trackers have a replaceable watch band.
Quick-release band system.
Band width
N/A
Show more
What reviewers say

Fitbit One vs the average fitness tracker

246810TotalHealthSportsBatteryDisplayConnectivitySmart functionsDesignWellness
  • Tracks elevation
    This fitness tracker supports elevation tracking, while the average fitness tracker does not. 24.5% of fitness trackers support elevation tracking.
  • 4 days longer battery life
    This fitness tracker 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
  • 62.2% lighter
    This fitness tracker is lighter than the average fitness tracker (9.1 g vs 24 g). The average fitness tracker weighs 24 g.
    Clip-on module with clip.
    9.07 g vs 24 g
  • Mac OS X compatible
    This fitness tracker is compatible with Mac OS X, while the average fitness tracker is not. 26.3% of fitness trackers are compatible with Mac OS X.
    Via Fitbit Connect.
  • Built-in barometer
    This fitness tracker has a barometer, while the average fitness tracker does not. 10.4% of fitness trackers have a barometer.
  • 10 m longer Bluetooth range
    This fitness tracker 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
  • 11.0% higher review score
    Reviews score
    8.1/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.2 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ▲ Better than 79% of models

    80%

    8.0

    Average grade

    20%

    8.4

    Popularity

    Grades by review (30)
    23 reviews: 10 with a printed score, 13 estimated from the review. 7 video reviews, each counting half as much as a written test. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    8.1 vs 7.3
  • Tracks calorie intake
    This fitness tracker supports calorie intake tracking, while the average fitness tracker does not. 38.4% of fitness trackers support calorie intake tracking.
  • 11.0% higher review score
    Reviews score
    8.1/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.2 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ▲ Better than 79% of models

    80%

    8.0

    Average grade

    20%

    8.4

    Popularity

    Grades by review (30)
    23 reviews: 10 with a printed score, 13 estimated from the review. 7 video reviews, each counting half as much as a written test. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    8.1 vs 7.3
  • Tracks elevation
    This fitness tracker supports elevation tracking, while the average fitness tracker does not. 24.5% of fitness trackers support elevation tracking.
  • Built-in barometer
    This fitness tracker has a barometer, while the average fitness tracker does not. 10.4% of fitness trackers have a barometer.
  • 4 days longer battery life
    This fitness tracker 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
  • Mac OS X compatible
    This fitness tracker is compatible with Mac OS X, while the average fitness tracker is not. 26.3% of fitness trackers are compatible with Mac OS X.
    Via Fitbit Connect.
  • 10 m longer Bluetooth range
    This fitness tracker 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
  • Firmware update method
    This fitness tracker uses a more convenient firmware update method than the average fitness tracker (over-the-air / USB vs over-the-air). The average fitness tracker uses over-the-air for firmware updates.
    over-the-air / USB vs over-the-air
  • 1 more physical buttons
    This fitness tracker has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
    1 vs 0
  • 62.2% lighter
    This fitness tracker is lighter than the average fitness tracker (9.1 g vs 24 g). The average fitness tracker weighs 24 g.
    Clip-on module with clip.
    9.07 g vs 24 g
  • 1.35 mm thinner design
    This fitness tracker is thinner than the average fitness tracker (9.7 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.
    9.65 mm vs 11 mm
  • Tracks calorie intake
    This fitness tracker supports calorie intake tracking, while the average fitness tracker does not. 38.4% of fitness trackers support calorie intake tracking.
  • Water intake tracking
    This fitness tracker supports water intake tracking, while the average fitness tracker does not. 40.9% of fitness trackers support water intake tracking.
  • No heart rate monitoring
    This fitness tracker does not support heart rate monitoring, while the average fitness tracker does. 63.9% of fitness trackers support heart rate monitoring.
  • No automatic activity detection
    This fitness tracker does not support automatic activity detection, while the average fitness tracker does. 56.4% of fitness trackers support automatic activity detection.
  • Higher resting heart rate
    This fitness tracker does not support Resting heart rate, while the average fitness tracker does. 52.7% of fitness trackers support Resting heart rate.
  • No pace measurement
    This fitness tracker does not support pace measurement, while the average fitness tracker does. 62.9% of fitness trackers support pace measurement.
  • No notifications
    This fitness tracker does not support notifications, while the average fitness tracker does. 72.3% of fitness trackers support notifications.
  • No shock resistance standard
    This fitness tracker meets a weaker shock resistance standard than the average fitness tracker (none vs MIL-STD-810H). The average fitness tracker meets the MIL-STD-810H shock resistance standard.
    none vs MIL-STD-810H
  • No phone finder
    This fitness tracker does not support phone finding, while the average fitness tracker does. 50.9% of fitness trackers support phone finding.
  • 0.5 hours longer charging time
    This fitness tracker 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
  • 28.6% more expensive
    Fitbit One is more expensive than the average fitness tracker (£90 vs £70).
    £90 vs £70
  • No heart rate monitoring
    This fitness tracker does not support heart rate monitoring, while the average fitness tracker does. 63.9% of fitness trackers support heart rate monitoring.
  • Higher resting heart rate
    This fitness tracker does not support Resting heart rate, while the average fitness tracker does. 52.7% of fitness trackers support Resting heart rate.
  • No sleep reports
    This fitness tracker does not support sleep reports, while the average fitness tracker does. 86.6% of fitness trackers support sleep reports.
  • 5 years older release date
    This fitness tracker was released earlier than the average fitness tracker (2012 vs 2017). The average fitness tracker was released in 2017.
    November 2012
    2012 vs 2017
  • No automatic activity detection
    This fitness tracker does not support automatic activity detection, while the average fitness tracker does. 56.4% of fitness trackers support automatic activity detection.
  • No pace measurement
    This fitness tracker does not support pace measurement, while the average fitness tracker does. 62.9% of fitness trackers support pace measurement.
  • No route tracker
    This fitness tracker does not support route tracking, while the average fitness tracker does. 52.3% of fitness trackers support route tracking.
  • 0.5 hours longer charging time
    This fitness tracker 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
  • 52% smaller battery capacity
    This fitness tracker has a lower battery capacity than the average fitness tracker (60 mAh vs 125 mAh). The average fitness tracker has 125 mAh of battery capacity.
    60 mAh vs 125 mAh
  • Old Bluetooth version
    This fitness tracker supports an older Bluetooth version than the average fitness tracker (4 vs 4.1). The average fitness tracker supports Bluetooth 4.1.
    4 vs 4.1
  • No notifications
    This fitness tracker does not support notifications, while the average fitness tracker does. 72.3% of fitness trackers support notifications.
  • No phone finder
    This fitness tracker does not support phone finding, while the average fitness tracker does. 50.9% of fitness trackers support phone finding.
  • No stopwatch
    This fitness tracker does not have a stopwatch, while the average fitness tracker does. 60.5% of fitness trackers have a stopwatch.
  • No shock resistance standard
    This fitness tracker meets a weaker shock resistance standard than the average fitness tracker (none vs MIL-STD-810H). The average fitness tracker meets the MIL-STD-810H shock resistance standard.
    none vs MIL-STD-810H
  • 49 m lower waterproof depth rating
    This fitness tracker 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
  • 6.68 mm greater height
    This fitness tracker is taller than the average fitness tracker (48 mm vs 41.3 mm). The average fitness tracker has a height of 41.325 mm.
    48 mm vs 41.325 mm
  • No inactivity alerts
    This fitness tracker does not support inactivity alerts, while the average fitness tracker does. 78.7% of fitness trackers support inactivity alerts.
  • Ads in app
    This fitness tracker shows ads in the app, while the average fitness tracker does not. 50.6% of fitness trackers have an ad-free app.

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

9.0
SpikedStudio
≈ estimated
26/08/2013
Hands-on review · activity, sleep and food tracking
Verdict
Fitbit One is a reliable, easy-to-use tracker for basic fitness monitoring.
9.0
techgooch
≈ estimated
26/03/2013
Full review · daily use and customer service
Verdict
Fitbit One is a small tracker that works well and goes a long time on one charge.
9.0
Ben “d900man” Stubley
≈ estimated
18/02/2013
Hands-on review · sleep and app tests
Verdict
Fitbit One is easy to live with: a daily-check tracker with detailed sleep and activity data.
9.0
Helpful DIY
≈ estimated
31/03/2016
Hands-on review · daily use and display walkthrough
Verdict
Fitbit One is a solid activity and sleep tracker that the reviewer is happy to wear daily.
7.0
Focus Magazine
≈ estimated
03/04/2013
Week-long test · activity, sleep and food tracking
Verdict
Fitbit One suits inactive users who need a wake-up call, but not people who already exercise.
9.0
Tesa Nicolanti
≈ estimated
11/03/2013
Hands-on demo · two nights of sleep tracking
Verdict
Fitbit One is a small clip-on tracker that clearly shows your sleep quality and daily activity.
Not graded
Hands-on video, no verdict
Overview video
Overview video
Not graded
Not graded

Expert reviews

In-depth analysis and verdict from leading tech publications

9.0
techradar.com
✓ explicit
12/12/2012
Hands-on review · Fitness tracker
Verdict
The Fitbit One is versatile and light, with accurate steps and stair counting, but its battery lasts only about seven days and it needs apps to be useful.
8.0
t3.com
✓ explicit
29/01/2013
Hands-on review · Wireless fitness tracker
Verdict
The Fitbit One is a discreet, lightweight tracker with a more secure clip and wireless sync, but it lacks GPS and food logging is tedious.
7.3
cnet.com
✓ explicit
30/04/2013
Hands-on test · Clip-on tracker
Verdict
The Fitbit One tracks steps, stairs, calories and sleep well, but its clip can come loose and drop off, so it suits only people who dislike wristbands.
6.0
cnet.com
≈ estimated
22/04/2013
Long-term test · Clip-on tracker
Verdict
The Fitbit One suits walkers and runners, since it tracks steps well but misses non-step activities such as paddleboarding.
9.0
akanekinomoto.com
≈ estimated
12/07/2013
One-week test · Clip-on tracker
Verdict
The Fitbit One is a motivating, lightweight tracker whose sleep tracking and silent alarm impress most, though its tiny size makes it easy to forget.
9.5
uk.pcmag.com
≈ estimated
16/05/2014
Product review · Activity tracker
Verdict
The Fitbit One suits people who want a broad picture of daily fitness, with solid step, stair and sleep tracking and a web account that links to many other apps.
8.0
feelingfit.info
≈ estimated
14/08/2014
Long-term user review · Clip-on tracker
Verdict
The Fitbit One suits people who want an unobtrusive step counter that keeps them motivated, though it misses arm movements and is easy to lose.
6.0
expertreviews.co.uk
✓ explicit
06/10/2016
Hands-on review · Discreet clip-on tracker
Verdict
The Fitbit One suits people who want a discreet step counter, though sleep tracking needs a button press and it has no heart rate or GPS.
8.0
techgearlab.com
✓ explicit
11/01/2017
Lab test · Clip-on tracker
Verdict
The Fitbit One suits casual walkers who want accurate steps and a long battery, but it lacks heart rate tracking and is hard to read in sunlight.
9.6
outdoorgearlab.com
✓ explicit
11/11/2016
Group test · Sleep tracker with screen
Verdict
The Fitbit One suits people who want steps and sleep on one small clip, though its rechargeable battery needs charging about once a week.
7.0
gizmodo.com
✓ explicit
24/10/2012
Daily-use test · Clip-on tracker
Verdict
The Fitbit One is a solid, well-built tracker whose altimeter and silent alarm stand out, but its sleep tracking is too erratic to trust.
7.0
gadfit.com
≈ estimated
24/11/2013
Hands-on test · Activity tracker
Verdict
The Fitbit One is an accurate step counter for walking and running, with handy friend challenges, but its sleep tracking and food logging are tedious to use.
6.0
goughlui.com
≈ estimated
01/07/2016
Hands-on review · Basic clip-on tracker
Verdict
The Fitbit One is a basic tracker that works with phones and PCs and exports your data, but detailed reports need the paid Premium plan.
9.0
programmingzen.com
≈ estimated
12/03/2021
Hands-on review · Sleep and step tracker
Verdict
The Fitbit One is accurate and discreet with a gentle vibrating alarm, but its battery lasts only about a week with frequent syncing.
9.0
marathonfitness.de
≈ estimated
21/02/2026
Three-month review · Clip-on tracker
Verdict
The Fitbit One is a tiny clip-on tracker with about two weeks per charge, suited to people who dislike wrist bands, though it has since been discontinued.
7.0
newgadgets.de
≈ estimated
20/07/2013
Hands-on test · Step counter
Verdict
The Fitbit One is a small clip-on tracker that pushes you to walk more with badges and stair counts, but its first setup failed and it misses cycling and yoga.
9.0
connect.de
✓ explicit
23/05/2014
Comparison test · Clip-on tracker
Verdict
The Fitbit One is a small, well-made tracker with a clear screen and stair counting, but it lacks a wristband and uses a proprietary charger.
7.0
topfree.de
≈ estimated
20/08/2014
Practical test · Clip-on tracker
Verdict
The Fitbit One suits people who aren't very sporty, motivating more walking and stair use, though its altimeter once miscounted floors badly.
8.0
emilcar.es
≈ estimated
27/05/2013
Personal experience · Clip tracker
Verdict
The Fitbit One is a clip-on tracker that counts steps and floors well and wakes you with silent vibration, but its sleep scores are rough and food logging is tedious.
9.0
techcetera.co
≈ estimated
28/10/2013
Hands-on test · Clip-on tracker
Verdict
The Fitbit One suits people who want their activity measured with almost no effort, thanks to its long battery and easy syncing, though logging food gets tedious.

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 don't like 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

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.

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