Scored using Fitness trackers Methodology v1.0
Fitness trackers Methodology v1.0
Mathematical & Unbiased Scoring
Products in this category are evaluated mathematically under Frontumo Fitness trackers Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
Explore Fitness trackers Methodology v1.0

Fitbit Ace 2 Review | 171 Data compared

Avg. price:~£60Battery life:5 daysScreen size:0.72 inchHeart rate monitor:noGPS:noWaterproof depth rating:50 m

Fitbit Ace 2 Review: Compare 171 technical specifications and user reviews to see how this product ranks in the Fitness trackers category and whether it is worth buying.

6.3

Overall score

Score
6.3/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
Score components

80%

5.5

Technical score

20%

9.6

User score

▼Worse than 80% of fitness-trackers
5.5

Technical score

Technical score
5.5/ 10
✕
What it is
An assessment of technical performance for products in the Fitness trackers category across these key areas: Health, Sports & Navigation, Smart Features, App & Wellness, Connectivity, Battery, Display, Design & Durability.
When it matters
When you want to compare fitness trackers based on technical performance and available features.
Score distribution
▼
<55-66-77-88-99-10
Score components

20%

4.8

Sports & Navigation

20%

4.8

Battery

18%

4.9

Health

18%

5.0

Display

8%

7.2

Smart Features

8%

7.2

App & Wellness

4%

7.8

Connectivity

4%

8.4

Design & Durability

▼Worse than 96% of fitness-trackers
9.6

User score

User score
9.6/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
Score components

70%

9.4

User ratings

30%

10

Number of reviews

Based on 20,056 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
★Better than 99% of fitness-trackers
  • fitbit-ace-2
  • fitbit-ace-2
  • fitbit-ace-2
  • fitbit-ace-2
  • fitbit-ace-2
fitbit-ace-2
fitbit-ace-2
fitbit-ace-2
fitbit-ace-2
fitbit-ace-2

Best prices

*As an Amazon Associate, we earn from qualifying purchases.

Best rankings

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

Technical Specifications of fitness tracker Fitbit Ace 2

Technical score
Technical score
5.5/ 10
✕
What it is
An assessment of technical performance for products in the Fitness trackers category across these key areas: Health, Sports & Navigation, Smart Features, App & Wellness, Connectivity, Battery, Display, Design & Durability.
When it matters
When you want to compare fitness trackers based on technical performance and available features.
Score distribution
▼
<55-66-77-88-99-10
Score components:

20%

4.8

Sports & Navigation

20%

4.8

Battery

18%

4.9

Health

18%

5.0

Display

8%

7.2

Smart Features

8%

7.2

App & Wellness

4%

7.8

Connectivity

4%

8.4

Design & Durability

5.5
User score
User score
9.6/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
Score components

70%

9.4

User ratings

30%

10

Number of reviews

Based on 20,056 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
9.6
Popularity
Popularity
10.0/ 10
✕
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.
Score distribution
▼
<55-66-77-88-99-10
Popularity:
Fitbit Ace 2 has a popularity score of 10 points, which is higher than 91.6% of fitness trackers.
10
Value for money
Value for money
7.4/ 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
Score components:

60%

6.3

Overall score

40%

10

Price

7.4
Heart rate monitor
no
Heart rate monitor
no
This fitness tracker does not support heart rate monitoring. 60.3% of fitness trackers support heart rate monitoring.
Resting heart rate
no
Resting heart rate
no
This fitness tracker does not support Resting heart rate. 47.9% of fitness trackers support Resting heart rate.
Fast/slow heart rate alerts
no
Fast/slow heart rate alerts
no
This fitness tracker does not support high and low heart rate alerts. 34.7% of fitness trackers support high and low heart rate alerts.
Irregular heart rate alerts
no
Irregular heart rate alerts
no
This fitness tracker does not support irregular heart rate alerts. 12.4% of fitness trackers support irregular heart rate alerts.
Blood oxygen sensor
no
Blood oxygen sensor
no
This fitness tracker does not have a blood oxygen sensor. 25.4% of fitness trackers have a blood oxygen sensor.
Show more
GPS
no
GPS
no
This fitness tracker does not have GPS. 11% of fitness trackers have GPS.
Satellite systems supported
no
Satellite systems supported
no
This fitness tracker 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
no
GNSS bands supported
no
This fitness tracker does not support advanced GNSS bands. 8.9% of fitness trackers support advanced GNSS bands.
Galileo support
no
Galileo support
no
This fitness tracker does not support Galileo. 4.9% of fitness trackers support Galileo.
Acquires GPS faster
no
Acquires GPS faster
no
This fitness tracker does not support faster GPS acquisition. 8.1% of fitness trackers support faster GPS acquisition.
Show more
Notifications
yes
Notifications
yes
This fitness tracker supports notifications. 27.5% of fitness trackers support notifications.
limited to call/SMS alerts.
Vibrating alerts
yes
Vibrating alerts
yes
This fitness tracker supports vibration alerts. 16.3% of fitness trackers support vibration alerts.
Call control
no
Call control
no
This fitness tracker does not support call controls. 41.8% of fitness trackers support call controls.
Call answering
no
Call answering
no
This fitness tracker does not support call answering. 1% of fitness trackers support call answering.
Calendar sync
no
Calendar sync
no
This fitness tracker does not support calendar sync. 20.3% of fitness trackers support calendar sync.
Show more
Activity reports
yes
Activity reports
yes
This fitness tracker supports activity reports. 5.7% of fitness trackers support activity reports.
via Fitbit app
Goal setting
yes
Goal setting
yes
This fitness tracker supports goal setting. 2.4% of fitness trackers support goal setting.
Achievements
yes
Achievements
yes
This fitness tracker supports achievements. 24.3% of fitness trackers support achievements.
Inactivity alerts
yes
Inactivity alerts
yes
This fitness tracker supports inactivity alerts. 23.5% of fitness trackers support inactivity alerts.
Coaching
no
Coaching
no
This fitness tracker does not support coaching. 34% of fitness trackers support coaching.
Show more
Bluetooth version
4
Bluetooth version
4
This fitness tracker supports Bluetooth 4 which is newer than in 5.1% of fitness trackers and equal to that in 51.3% of fitness trackers.
Maximum Bluetooth range
9 m
Maximum Bluetooth range
9 m
This fitness tracker offers a Bluetooth range of 9 m which is lower than that of 88.8% of fitness trackers and equal to that of 1.5% of fitness trackers.
NFC
no
NFC
no
This fitness tracker does not have NFC. 13% of fitness trackers have NFC.
Wi-Fi connectivity
no
Wi-Fi connectivity
no
This fitness tracker does not support Wi-Fi. 1.8% of fitness trackers support Wi-Fi.
Wi-Fi version
no
Wi-Fi version
no
This fitness tracker does not support modern Wi-Fi. 1% of fitness trackers support modern Wi-Fi.
no Wi-Fi support.
Show more
Battery life
5 days
Battery life
5 days
This fitness tracker 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
N/A
Battery life in training mode
?
Battery life in power-saving mode
N/A
Battery capacity
?
Show more
Display
yes
Display
yes
This fitness tracker has a display. 24.1% of fitness trackers have a display.
Screen size
0.72 inch
Screen size
0.72 inch
This fitness tracker 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
OLED
Display type
OLED
This fitness tracker uses OLED display technology which is more advanced than that of 52.8% of fitness trackers and the same as that of 21.5% of fitness trackers.
Monochrome OLED display.
Screen resolution
?
Pixel density
194 ppi
Pixel density
194 ppi
This fitness tracker has a pixel density of 194 ppi which is lower than that of 61.1% of fitness trackers and equal to that of 2.8% of fitness trackers.
Show more
Form factor
wristband
Hybrid design
no
Hybrid design
no
This fitness tracker does not support Hybrid design. 2.4% of fitness trackers support Hybrid design.
Designed for kids
yes
Designed for kids
yes
This fitness tracker is designed for kids. 98.1% of fitness trackers are designed for kids.
Explicit kids tracker line.
Replaceable watch band
yes
Replaceable watch band
yes
This fitness tracker has a replaceable watch band. 25.6% of fitness trackers have a replaceable watch band.
Band width
16 mm
Show more

Fitbit Ace 2 vs the average fitness tracker

246810TotalHealthSports & NavigationBatteryDisplayConnectivitySmart FeaturesDesign & DurabilityApp & Wellness
  • Branded damage-resistant glass
    Has branded damage-resistant glass
    yes
    This fitness tracker 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.
  • Mac OS X compatible
    Compatible with Mac OS X
    yes
    This fitness tracker is compatible with Mac OS X, while the average fitness tracker is not. 28.8% of fitness trackers are compatible with Mac OS X.
    Via Fitbit Connect.
  • 19.6% higher user score
    User score
    9.6/ 10
    ✕
    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 distribution
    ▼
    ▼
    <55-66-77-88-99-10
    Fitbit Ace 2
    the average fitness tracker
    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
    Designed for kids
    yes
    This fitness tracker is designed for kids, while the average fitness tracker is not. 2.3% of fitness trackers are designed for kids.
    Explicit kids tracker line.
  • 19.5% lighter
    Thickness
    20.13 g mm
    This fitness tracker 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
  • 97.4% more popular
    Fitbit Ace 2 has a higher popularity than the average fitness tracker (10 vs 5.1).
    10 vs 5.07
  • 1 more physical buttons
    N. of physical buttons
    1
    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
  • Gesture control
    Gesture control
    yes
    This fitness tracker supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
  • 19.6% higher user score
    User score
    9.6/ 10
    ✕
    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 distribution
    ▼
    ▼
    <55-66-77-88-99-10
    Fitbit Ace 2
    the average fitness tracker
    Fitbit Ace 2 has a higher user score than the average fitness tracker (9.57 vs 8.000).
    9.57 vs 8
  • 97.4% more popular
    Fitbit Ace 2 has a higher popularity than the average fitness tracker (10 vs 5.1).
    10 vs 5.07
  • Branded damage-resistant glass
    Has branded damage-resistant glass
    yes
    This fitness tracker 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.
  • Mac OS X compatible
    Compatible with Mac OS X
    yes
    This fitness tracker is compatible with Mac OS X, while the average fitness tracker is not. 28.8% of fitness trackers are compatible with Mac OS X.
    Via Fitbit Connect.
  • 1 more physical buttons
    N. of physical buttons
    1
    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
  • Gesture control
    Gesture control
    yes
    This fitness tracker supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
  • More child-focused design
    Designed for kids
    yes
    This fitness tracker is designed for kids, while the average fitness tracker is not. 2.3% of fitness trackers are designed for kids.
    Explicit kids tracker line.
  • 19.5% lighter
    Thickness
    20.13 g mm
    This fitness tracker 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
  • No heart rate monitoring
    Heart rate monitor
    no
    This fitness tracker does not support heart rate monitoring, while the average fitness tracker does. 60% of fitness trackers support heart rate monitoring.
  • No automatic activity detection
    Automatic activity detection
    no
    This fitness tracker does not support automatic activity detection, while the average fitness tracker does. 52% of fitness trackers support automatic activity detection.
  • 5 days shorter battery life
    Battery life
    5 days
    This fitness tracker 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
    Measures pace
    no
    This fitness tracker does not support pace measurement, while the average fitness tracker does. 61.7% of fitness trackers support pace measurement.
  • No distance tracking
    Distance tracking
    no
    This fitness tracker does not support distance tracking, while the average fitness tracker does. 95.8% of fitness trackers support distance tracking.
  • No exercise tagging
    Exercise tagging
    no
    This fitness tracker does not support exercise tagging, while the average fitness tracker does. 58.4% of fitness trackers support exercise tagging.
  • 0.32 inch smaller screen size
    Screen size
    0.72 inch
    This fitness tracker 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
    Provides sleep reports
    no
    This fitness tracker does not support sleep reports, while the average fitness tracker does. 84.8% of fitness trackers support sleep reports.
  • 6.7% worse value for money
    Fitbit Ace 2 has a lower value-for-money score than the average fitness tracker (7.42 vs 7.9).
    7.42 vs 7.92
  • No heart rate monitoring
    Heart rate monitor
    no
    This fitness tracker does not support heart rate monitoring, while the average fitness tracker does. 60% of fitness trackers support heart rate monitoring.
  • No sleep reports
    Provides sleep reports
    no
    This fitness tracker does not support sleep reports, while the average fitness tracker does. 84.8% of fitness trackers support sleep reports.
  • 5 days shorter battery life
    Battery life
    5 days
    This fitness tracker 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
  • 0.32 inch smaller screen size
    Screen size
    0.72 inch
    This fitness tracker 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
  • 33.3% lower screen brightness
    Screen brightness
    300 nits
    This fitness tracker 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.
    300 nits vs 450 nits
  • 20.8% lower pixel density
    Pixel density
    194 ppi
    This fitness tracker has a lower pixel density than the average fitness tracker (194 ppi vs 245 ppi). The average fitness tracker has a pixel density of 245 ppi.
    194 ppi vs 245 ppi
  • 1 m shorter Bluetooth range
    Maximum Bluetooth range
    9 m
    This fitness tracker 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.
    9 m vs 10 m
  • Limited ip rating
    IP rating
    IPX8
    This fitness tracker has a lower IP rating than the average fitness tracker (IPX8 vs IP68). The average fitness tracker has an IP rating of IP68.
    IPX8 vs IP68
  • 10 °C higher minimum operating temperature
    Min operating temperature
    -10 °C
    This fitness tracker 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.
    -10 °C vs 0 °C
  • No weight tracking
    Weight tracking
    no
    This fitness tracker does not support weight tracking, while the average fitness tracker does. 81% of fitness trackers support weight tracking.
  • No calorie burn tracking
    Calorie burn tracking
    no
    This fitness tracker 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
    BMI tracking
    no
    This fitness tracker does not support BMI tracking, while the average fitness tracker does. 71% of fitness trackers support BMI tracking.

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

T
techradar.com
10/03/2021
Summary of the review
P
pcmag.com
08/08/2019
Summary of the review
I
impulsegamer.com
19/08/2019
Summary of the review
D
digitaltrends.com
26/04/2022
Summary of the review
F
fitandwell.com
27/06/2022
Summary of the review
T
techadvisor.com
03/07/2019
Summary of the review
F
futurefive.co.nz
16/08/2019
Summary of the review
T
t3.com
22/07/2022
Summary of the review
W
wareable.com
09/09/2019
Summary of the review
P
pocket-lint.com
25/07/2019
Summary of the review
T
t3.com
04/04/2021
Summary of the review

Third-party reviews

Based on 20,056 buyer reviews from online shops.
Reviews last updated: June 2026 · How we calculate this

What we 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 we don't like 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

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.

Compare Fitbit Ace 2 with other products in the Fitness trackers category

1Product to compare no. 1
VS
2Product to compare no. 2
VS
3Product to compare no. 3 (optional)

Graphic comparison of Fitbit Ace 2 and other products in the Fitness trackers category

No results found