Fitbit Ace 2 Review | 171 Data compared

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  • Avg. price in UK: ~£60
  • Avg. price in US: ~$70
  • Form factor: wristband
  • Battery life: 5 days
  • Screen size: 0.72 inch

Fitbit Ace 2 review. Compare 171 technical specifications and user reviews to see how it ranks among fitness trackers and if it is worth buying.

6.4

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%

5.6

Technical Score

20.0%

9.6

User score

Good
5.6

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%

4.8

Sports & Navigation

20.0%

4.9

Battery

18.0%

4.9

Health

18.0%

5.2

Display

8.0%

7.3

Smart Features

8.0%

7.2

App & Wellness

4.0%

7.8

Connectivity

4.0%

8.6

Design & Durability

Good
9.6

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%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.7
(19288)
amazon
4.5
(517)
amazon
4.4
(249)
amazon
2.3
(2)

(Reviews last updated: Jun 2026)

Exceptional
  • 6.5
    Swimming

    Score components:

    28.0%

    10

    ATM rating

    24.0%

    4.0

    Open-water swim mode

    18.0%

    10

    Waterproof depth rating

    15.0%

    4.0

    GPS

    15.0%

    2.0

    Battery life

  • 6.2
    Kids

    Score components:

    30.0%

    2.0

    Battery life

    25.0%

    8.7

    Weight

    20.0%

    10

    ATM rating

    15.0%

    2.6

    Screen size

    10.0%

    10

    Price

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Best prices in UK

Best rankings

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

Verdict

The Fitbit Ace 2 is a rugged, kid-friendly fitness tracker designed for children aged 6+, featuring a 0.72-inch monochrome OLED touchscreen with 128 x 72 resolution and a durable silicone band with a protective bumper. It tracks daily steps, active minutes, and sleep duration using a 3-axis accelerometer, while offering a 5-day battery life and water resistance up to 50 meters for swimming. Key pros include its highly durable, stain-resistant design, motivational animated clock faces, and a secure 'Kid View' in the companion app for parental peace of mind. Main cons include the lack of a heart rate monitor, no built-in GPS, and a grayscale display that can be difficult to read in direct sunlight.

Technical Specifications of Fitbit Ace 2

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%

4.8

Sports & Navigation

20.0%

4.9

Battery

18.0%

4.9

Health

18.0%

5.2

Display

8.0%

7.3

Smart Features

8.0%

7.2

App & Wellness

4.0%

7.8

Connectivity

4.0%

8.6

Design & Durability

5.6
Fitbit Ace 2 has a technical score of 5.56 points, which is lower than 95.8% 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%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.7
(19288)
amazon
4.5
(517)
amazon
4.4
(249)
amazon
2.3
(2)

(Reviews last updated: Jun 2026)

9.6
Fitbit Ace 2 has a user score of 9.57 points, which is higher than 100% of fitness trackers.
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.
10
Fitbit Ace 2 has a popularity of 10 points, which is higher than 60.1% 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%

6.4

Overall score

40.0%

10

Price

7.5
Fitbit Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 does not have a blood oxygen sensor. 26.1% of fitness trackers have a blood oxygen sensor.
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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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 does not support faster GPS acquisition. 7.2% of fitness trackers support faster GPS acquisition.
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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

yes
Fitbit Ace 2 supports notifications. 27.5% of fitness trackers support notifications.
limited to call/SMS alerts.
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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 supports achievements. 24.3% of fitness trackers support achievements.
Includes milestone trophies.
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

yes
Fitbit Ace 2 supports inactivity alerts. 23.7% of fitness trackers support inactivity alerts.
Move reminders supported.
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 Ace 2 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 Ace 2 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

9 m
Fitbit Ace 2 offers a Bluetooth range of 9 m which is lower than that of 89.2% of fitness trackers and equal to that of 1.5% 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 Ace 2 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 Ace 2 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 Ace 2 does not support modern Wi-Fi. 1% of fitness trackers support modern Wi-Fi.
no Wi-Fi support.
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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

5 days
Fitbit Ace 2 offers a battery life of 5 days which is shorter than that of 79.2% of fitness trackers and equal to that of 12.4% 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

?
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

?
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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 Ace 2 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

0.72 inch
Fitbit Ace 2 has a screen size of 0.72 inch which is smaller than that of 88.8% of fitness trackers and equal to that of 1.4% of fitness trackers.
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 Ace 2 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

194 ppi
Fitbit Ace 2 has a pixel density of 194 ppi which is lower than that of 63.7% of fitness trackers and equal to that of 2.9% of fitness trackers.
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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

wristband
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 Ace 2 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

yes
Fitbit Ace 2 is designed for kids. 98.1% of fitness trackers are designed for kids.
Explicit kids tracker line.
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 Ace 2 has a replaceable watch band. 24.4% of fitness trackers have a replaceable watch band.
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

16 mm
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Fitbit Ace 2 vs the average fitness tracker

  • Branded damage-resistant glass
    Fitbit Ace 2 uses branded damage-resistant glass, while the average fitness tracker does not. 22.2% of fitness trackers use branded damage-resistant glass.
    Corning Gorilla Glass 3.
    What it is: Shows whether the display uses a named reinforced glass brand instead of unspecified screen protection.
    When it matters: When scratch resistance and long-term display protection matter for everyday wear.

    Importance: LOW

    Fitbit Ace 2 uses branded damage-resistant glass, while the average fitness tracker does not. 22.2% of fitness trackers use branded damage-resistant glass.
  • Mac OS X compatible
    Fitbit Ace 2 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 Ace 2 is compatible with Mac OS X, while the average fitness tracker is not. 27.5% of fitness trackers are compatible with Mac OS X.
  • 19.6% higher user score
    Fitbit Ace 2 has a higher user score than the average fitness tracker (9.57 vs 8.000).
    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.
    Fitbit Ace 2 has a higher user score than the average fitness tracker (9.57 vs 8.000).9.57 vs 8
  • More child-focused design
    Fitbit Ace 2 is designed for kids, while the average fitness tracker is not. 2.3% of fitness trackers are designed for kids.
    Explicit kids tracker line.
    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

    Fitbit Ace 2 is designed for kids, while the average fitness tracker is not. 2.3% of fitness trackers are designed for kids.
  • 19.5% lighter
    Fitbit Ace 2 is lighter than the average fitness tracker (20.1 g vs 25 g). The average fitness tracker weighs 25 g.
    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 Ace 2 is lighter than the average fitness tracker (20.1 g vs 25 g). The average fitness tracker weighs 25 g.20.13 g vs 25 g
  • 1 more physical buttons
    Fitbit Ace 2 has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
    What it is: Number of physical control buttons on the device.
    When it matters: When buttons, crowns, gestures, or direct controls affect how quickly you can use the device mid-activity.

    Importance: LOW

    Fitbit Ace 2 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
  • Gesture control
    Fitbit Ace 2 supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
    What it is: Allows control through hand or wrist gestures.
    When it matters: When buttons, crowns, gestures, or direct controls affect how quickly you can use the device mid-activity.

    Importance: LOW

    Fitbit Ace 2 supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
  • Branded damage-resistant glass
    Fitbit Ace 2 uses branded damage-resistant glass, while the average fitness tracker does not. 22.2% of fitness trackers use branded damage-resistant glass.
  • Mac OS X compatible
    Fitbit Ace 2 is compatible with Mac OS X, while the average fitness tracker is not. 27.5% of fitness trackers are compatible with Mac OS X.
  • 1 more physical buttons
    Fitbit Ace 2 has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
  • Gesture control
    Fitbit Ace 2 supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
  • More child-focused design
    Fitbit Ace 2 is designed for kids, while the average fitness tracker is not. 2.3% of fitness trackers are designed for kids.
  • 19.5% lighter
    Fitbit Ace 2 is lighter than the average fitness tracker (20.1 g vs 25 g). The average fitness tracker weighs 25 g.
  • No heart rate monitoring
    Fitbit Ace 2 does not support heart rate monitoring, while the average fitness tracker does. 60% of fitness trackers support heart rate monitoring.
  • No sleep reports
    Fitbit Ace 2 does not support sleep reports, while the average fitness tracker does. 84.8% of fitness trackers support sleep reports.
  • No automatic activity detection
    Fitbit Ace 2 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 Ace 2 does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
  • No distance tracking
    Fitbit Ace 2 does not support distance tracking, while the average fitness tracker does. 95.3% of fitness trackers support distance tracking.
  • No exercise tagging
    Fitbit Ace 2 does not support exercise tagging, while the average fitness tracker does. 58.8% of fitness trackers support exercise tagging.
  • 10 fewer stored activities
    Fitbit Ace 2 has fewer stored activities than the average fitness tracker (0 vs 10). The average fitness tracker stores 10 activities.
  • 5 days shorter battery life
    Fitbit Ace 2 has a lower battery life than the average fitness tracker (5 days vs 10 days). The average fitness tracker has 10 days of battery life.
  • 0.32 inch smaller screen size
    Fitbit Ace 2 has a lower screen size than the average fitness tracker (0.7 inch vs 1.04 inch). The average fitness tracker has a screen size of 1.04 inch.
  • 33.3% lower screen brightness
    Fitbit Ace 2 has a lower screen brightness than the average fitness tracker (300 nits vs 450 nits). The average fitness tracker has screen brightness of 450 nits.
  • 21.5% lower pixel density
    Fitbit Ace 2 has a lower pixel density than the average fitness tracker (194 ppi vs 247 ppi). The average fitness tracker has a pixel density of 247 ppi.
  • 1 m shorter Bluetooth range
    Fitbit Ace 2 has a shorter Bluetooth range than the average fitness tracker (9 m vs 10 m). The average fitness tracker offers a Bluetooth range of 10 m.
  • 10 °C higher minimum operating temperature
    Fitbit Ace 2 has a higher minimum operating temperature than the average fitness tracker (-10 °C vs 0 °C). The average fitness tracker supports a minimum operating temperature of 0 °C.
  • No weight tracking
    Fitbit Ace 2 does not support weight tracking, while the average fitness tracker does. 81.3% of fitness trackers support weight tracking.
    Weight tracking is disabled on child-focused accounts.
  • No calorie burn tracking
    Fitbit Ace 2 does not support calorie burn tracking, while the average fitness tracker does. 98.1% of fitness trackers support calorie burn tracking.
    Calorie tracking was removed for child accounts.
  • No BMI tracking
    Fitbit Ace 2 does not support BMI tracking, while the average fitness tracker does. 71% of fitness trackers support BMI tracking.
  • No heart rate monitoring
    Fitbit Ace 2 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 Ace 2 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 Ace 2 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 Ace 2 does not support automatic activity detection, while the average fitness tracker does. 50.3% of fitness trackers support automatic activity detection.
  • 5 days shorter battery life
    Fitbit Ace 2 has a lower battery life than the average fitness tracker (5 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 Ace 2 has a lower battery life than the average fitness tracker (5 days vs 10 days). The average fitness tracker has 10 days of battery life.5 days vs 10 days
  • No pace measurement
    Fitbit Ace 2 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 Ace 2 does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
  • No distance tracking
    Fitbit Ace 2 does not support distance tracking, while the average fitness tracker does. 95.3% of fitness trackers support distance tracking.
    What it is: Calculates distance covered during exercise.
    When it matters: When you want the tracker to capture more workouts and training details with less manual effort.

    Importance: HIGH

    Fitbit Ace 2 does not support distance tracking, while the average fitness tracker does. 95.3% of fitness trackers support distance tracking.
  • No exercise tagging
    Fitbit Ace 2 does not support exercise tagging, while the average fitness tracker does. 58.8% of fitness trackers support exercise tagging.
    What it is: Allows tagging or categorization of specific exercises.
    When it matters: When you want the tracker to capture more workouts and training details with less manual effort.

    Importance: LOW

    Fitbit Ace 2 does not support exercise tagging, while the average fitness tracker does. 58.8% of fitness trackers support exercise tagging.
  • 0.32 inch smaller screen size
    Fitbit Ace 2 has a lower screen size than the average fitness tracker (0.7 inch vs 1.04 inch). The average fitness tracker has a screen size of 1.04 inch.
    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

    Fitbit Ace 2 has a lower screen size than the average fitness tracker (0.7 inch vs 1.04 inch). The average fitness tracker has a screen size of 1.04 inch.0.72 inch vs 1.04 inch
  • No sleep reports
    Fitbit Ace 2 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 Ace 2 does not support sleep reports, while the average fitness tracker does. 84.8% of fitness trackers support sleep reports.

Graphic comparison of Fitbit Ace 2 and

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Third-party reviews

(Reviews last updated: Jun 2026)

What customers like about Fitbit Ace 2?

  • Durable, rugged design with a protective bumper for the screen
  • Swimproof and water-resistant up to 50 metres
  • Motivational, kid-friendly interface with animated clock faces (e.g., growing plants or rockets)
  • Strong parental controls and privacy protections via the Fitbit Family app
  • Excellent battery life, typically lasting around 5 days on a single charge
  • Interchangeable straps that can be swapped for more 'grown-up' Inspire bands as the child ages

What customers dislike about Fitbit Ace 2?

  • Lacks a heart rate monitor and SPO2 sensor
  • Numerous user reports of the silicone band tearing or the tracker falling out of the strap
  • Grayscale/monochrome screen can be difficult to see in direct sunlight
  • Complex initial setup process, often requiring multiple firmware updates
  • Does not track distance or floors climbed due to having only a basic accelerometer
  • Limited on-device data; most detailed sleep and activity metrics must be viewed in the parent app

Expert reviews

T
techradar.com
10/03/2021

The Fitbit Ace 2 is a child-focused fitness tracker launched in June 2019 for $69.95 / £69.99 / AU$129.95, designed to encourage kids aged 6+ to stay active while keeping parents in control. Shaking off its predecessor's reliance on the adult-oriented Alta design, the Ace 2 features a playful aesthetic with an interchangeable, soft rubber-like strap that fully encases the main unit...Read more

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pcmag.com
08/08/2019

The Fitbit Ace 2 is a kid-focused, $69.95 fitness tracker featuring a rugged design with a protective silicone bumper, 19 animated clock faces, and 50-meter water resistance. Pros include an improved 0.72-inch OLED touch display and a reliable 5-day battery life. Conversely, cons include a grayscale screen that is hard to read in direct sunlight, occasional, unresponsive touch...Read more

I
impulsegamer.com
19/08/2019

The Fitbit Ace 2 Review by Impulse Gamer highlights this second-generation smart activity tracker as a highly motivating, child-friendly device tailored for kids aged six and older. The reviewer praises its redesigned, comfortable silicone band with adjustable clasps and a clear, greyscale OLED touchscreen that utilizes playful animations—like rockets and creatures—to celebrate...Read more

D
digitaltrends.com
26/04/2022

The Fitbit Ace 2 is a durable, kid-friendly fitness tracker designed for children aged 6 to 12, priced at $70, and built with water resistance up to swim-proof levels. It features a standalone tracking unit nestled inside a rugged silicone bumper band that protects the device, allowing parents to easily swap out damaged straps for bright, colorful replacements. Because it lacks a...Read more

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fitandwell.com
27/06/2022

Fitbit Ace 2 Review Summary The Fitbit Ace 2 is a highly durable and feature-rich fitness tracker designed specifically for younger children, retailing at a standard price of $69.99 / £69.99. It excels as a motivational tool by accurately tracking daily steps, activities, and sleep patterns. It leverages World Health Organisation standards to set a 60-minute daily physical activity...Read more

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techadvisor.com
03/07/2019

The Tech Advisor review positions the Fitbit Ace 2 as a budget-friendly, basic entry-level fitness tracker explicitly engineered to encourage healthy habits in children aged 6 and older. A major pro of the device is its robust, child-proof construction, featuring a protective silicone bumper that surrounds the touchscreen to protect against daily wear and tear. The review highly...Read more

F
futurefive.co.nz
16/08/2019

The FutureFive New Zealand review highlights the Fitbit Ace 2 as a highly engaging and improved fitness tracker specifically redesigned for children aged six and up. A major pro identified in the review is its vibrant, kid-friendly design, featuring a flexible silicone bumper pad available in playful colors like Watermelon and Night Sky, alongside interactive clock faces that...Read more

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t3.com
22/07/2022

Fitbit Ace 2 Review Summary The Fitbit Ace 2 is a sleek, durable, and highly intuitive fitness tracker tailored specifically to help children build healthy habits without unnecessary distractions. Priced at £49, it stands out for its slim silicone design that easily adjusts to small wrists and boasts an impressive battery life that lasts between five to six days on a single charge....Read more

W
wareable.com
09/09/2019

The Wareable review describes the Fitbit Ace 2 as a durable, waterproof (up to 50m) kid-proof tracker featuring engaging animated goal celebrations and a versatile design that allows the module to fit into adult-sized bands. While noted for its robust, playful design, the tracker features basic, unchanged metrics lacking a heart rate sensor, and it utilizes a monochromatic display...Read more

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pocket-lint.com
25/07/2019

The Fitbit Ace 2 is a child-friendly fitness tracker designed to encourage activity by focusing on steps, active minutes, and sleep tracking rather than adult metrics like weight or calories. This model introduces a rugged design where the rubber strap wraps over the front edges to protect the central sensor module from scratches. It features a larger, more engaging animated display...Read more

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t3.com
04/04/2021

The Fitbit Ace 3 serves as a highly successful, refined upgrade to the Fitbit Ace 2, keeping the core physical features that made its predecessor a hit with children aged six and up. It retains a comfortable, slim silicone band, an intuitive interface, and crucial baseline features like step tracking, sleep metrics, active minutes, and parental controls with no subscription fees...Read more

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