10 Best Fitness Tracker For Kids in The UK

Last updated on 30/05/2025

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Fitbit Ace 3 Activity Tracker for Kids with Animated Clock Faces, Up to 8 days battery life & water resistant up to 50 m ,Black/Red

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Why We Love It

Long-lasting battery life.
Fun, engaging animations.
Swim-friendly design.

Main Highlights

🔋 BATTERY LIFE: Up to 8 days of battery
📱 Compatibility: Compatible with iOS 12.2 or higher & Android OS 7.0 or higher
⏰ Animated Clock Faces: Fitbit Ace 3 makes fitness fun with animated clock face characters that change and grow as kids make progress toward their goal throughout the day
⚽️ All day activity tracking: Fitbit Ace 3 tracks all-day steps, and Active Minutes show how every move, skip and jump adds up to a healthier, more active life
😴 Sleep tracking: Help kids form healthy sleep habits with sleep tracking, bedtime reminders and silent alarms; Fitbit Ace 3 lets you know if kids are getting the rest they need since good sleep habits play a big role in their health
💦 Water resistant to 50m: Since Fitbit Ace 3 is water resistant, spills and splashes don’t stand a chance and kids can wear it in the pool and ocean
👩‍👩‍👧‍👦 Family Account & Parent View: Through Parent View in the family account, parents can see their kids’ activity and approve their connections

Garmin vivofit Jr. 3 Fitness Tracker for Kids, Disney, The Little Mermaid (Renewed)

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Why We Love It

Interactive Disney Princess adventures.
Durable, swim-friendly tracker.
Tracks steps and sleep.

Main Highlights

Includes an interactive app experience that lets kids explore magical kingdoms alongside their favourite Disney Princesses (requires Garmin Jr. app loaded on parent’s compatible smartphone paired to vívofit jr. 3)
Durable, swim-friendly fitness tracker features a large colour display with multiple watch face options and up to 1 year of battery life — no recharging needed, and the battery is parent replaceable
Motivates kids to achieve active minute goals that unlock entertaining app adventures, games and icons (requires Garmin Jr. app loaded on parent’s compatible smartphone paired to vívofit jr. 3)
For easy chore management, parents can use the Garmin Jr. app to assign tasks, schedule alerts and alarms, and reward kids for good behaviour (requires Garmin Jr. app loaded on parent’s compatible smartphone paired to vívofit jr. 3)
See the full picture by tracking your kid’s steps, estimated sleep and 60 minutes of daily recommended activity
Included components: Includes interactive app experience that lets kids go on a Garmin World Tour; kiddos can uncover and tour exciting new places (requires Garmin Jr. app loaded on parent’s compatible smartphone paired to vívofit jr

BIGGERFIVE Kids Smart Watch, 1.8" Fitness Watch Pedometer, Heart Rate, Sleep Tracker, IP68 Waterproof, Calorie Step Counter, Puzzle Games with/without APP for Girls Boys Teens 5-16, Blue

3% OffFree Shipping

Why We Love It

Tracks activities with precision.
80 diverse sports modes supported.
Customizable and interactive watch face.

Main Highlights

All-Day Activity Tracking: BIGGERFIVE BRAVE 2 Smart Watch for Kids Teens Automatically counts steps, distance, calories burned, and active minutes. Supports 80 sports modes like walking, running, cycling, swimming(IP68 Waterproof), basketball, and more.
Without/With APP: BIGGERFIVE kids fitness tracker watch can be used seperately without APP and phone. But with APP, you could explore more functions. Compatible with Android 6.0+ and iOS 9.0+ smartphones.
Comprehensive Health Monitoring: Monitors real-time heart rate and tracks sleep patterns to promote your child's well-being.
Customizable Watch Face &1.8" HD Touch Screen：Our kids smartwatch boasts a 1.8" HD touch screen and offers 100+ exquisite cloud dials in APP BIGGERFIVE. Elevate personal style with custom dials using your kids' own photos and ignite their creativity!
Puzzle Games under Parents' Control: 5 built-in puzzle games can help train your child's reaction ability and calculation ability. You could restrict your child from playing games at school in the BIGGERFIVE APP (supports also lock game all the time).
Encourages Healthy Habits & Perfect Gift Idea: BIGGERFIVE kids smart watch motivates children to develop good exercise habits and stay healthier. Ideal gift for birthdays, Christmas, and other special occasions.

Kids Smart Watch for Girls,IP68 Waterproof Kids Fitness Tracker Watch with 1.5 Inch DIY Face,Heart Rate Sleep Monitor,19 Sport Modes,Calories Counter,Alarm Clock,Great Gifts for Children 6+ (Purple)

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Why We Love It

Bright, customizable touch display.
Tracks health, fitness activities.
Supports multiple languages.

Main Highlights

【Great Gift for Kids Girls Boys】: Kids waterproof smart watch has a fashion and cute design 1.5-inch colorful touch screen can adjust brightness,and the display screen will automatically light up when you raise wrist. This watch will be a great Birthday,New year,Christmas gift for kids, boys girls teens.
【DIY Watch Face and Adjustable Strap】:This smart watch can customize wallpaper.Kids can choose the wallpaper that comes with the “HBAND” App or upload the favorite photo as wallpaper.You can customize the dial through the "HBAND" APP and choose your favorite dial style.
【7/24 Heart Rate Monitor and Sleep Tracker】Smart watch can accurately monitor the data of heart rate.You can view these data directly on kids watch to help you better understand your children health.You should adjust your lifestyle reasonably,provide comprehensive analysis of kids sleep quality (deep sleep,light sleep and wake up time) to help kids develop a healthier lifestyle. (NOTE:The measurement data is for reference only and cannot be used as medical monitoring data)
【Make Kids Fitness Fun and Build Healthy Habits】All-Day Activity Tracking: Automatically tracks your kids steps,distance and calories burned.Supports 19 activity modes:swimming,running,walking,cycling,yoga,football,basketball,etc. Sedentary reminder,Drink water reminder,Call/SMS/Message reminder,etc., IP68 waterproof, ready play in water.
【Wide Compatibility and Support Multi-languauge】The fitness watch support and compatible with most Android 4.4 above, IOS 8.0 or higher smart phones. Kids watch support Chinese,English,German,French,Spanish,Italian,Japanese, Follow the phone system language changes. 2 kinds of clocks display, 12 hours or 24 hours can be set, if you phone is 24 hours clock display, then the fitness tracker is 24 hours clock display.

BIGGERFIVE Kids Fitness Tracker Watch, Pedometer, Heart Rate, 5ATM Waterproof, Sleep Monitor, Alarm Clock, Calorie Step Counter, Puzzle Games, 1.5" HD Touch Screen Kids Smart Watch for Girls Ages 3-14

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Why We Love It

Encourages health and physical activity.
Suitable for water-based activities.
Ignites creativity with customization.

Main Highlights

BIGGERFIVE BRAVE Fitness Watch for Kids with All-Day Activity Tracking: Automatically counts steps, distance, calories burned, and active minutes. Supports 14 sports modes like walking, running, cycling, swimming, basketball, and more.
Comprehensive Health Monitoring: Monitors real-time heart rate, and tracks sleep patterns to promote your child's well-being.
50M/5ATM Super Waterproof Design: Suitable for active water play up to 50 meters deep, making it perfect for pool time and water activities.
Wide Compatibility & User-Friendly Interface: Compatible with Android 6.0+ and iOS 9.0+ smartphones. Kid-friendly interface ensures easy operation, while the family account feature simplifies management of multiple kid's trackers.
Customizable Watch Face&1.5" HD Touch Screen：Our kids smartwatch boasts a 1.5" HD touch screen and offers 50 exquisite cloud dials. Elevate personal style with custom dials using your kids' own photos and ignite their creativity!

BIGGERFIVE Vigor 2 L Kids Fitness Tracker Watch for Boys Girls Ages 5-15, Activity Tracker, Heart Rate Sleep Monitor, IP68 Waterproof, Pedometer, Calorie Step Counter Watch, Black

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Why We Love It

Earn Virtual Medals For Motivation.
Supports Various Sports Modes.
Monitors Your Child's Sleep.

Main Highlights

[ALL-DAY ACTIVITY TRACKING] Track your child's daily steps, calories burned, and distance walked. To keep the motivation high, kids earn virtual medals when they reach specific activity goals, making fitness fun and engaging.
[10+ SPORT MODES & IP68 WATERPROOF] From running to basketball, soccer to cycling, our kids fitness tracker supports over 10 different sports modes. Whether your child is swimming (IP68 waterproof, safe for pool but not seawater) or showering, the BIGGERFIVE tracker is built to keep up with their active lifestyle.
[HEART RATE & SLEEP MONITORING] Stay informed about your child's heart rate data 24/7. The sleep-monitor feature of our kids watch provides insights into various sleep stages, such as the duration of deep sleep, and offers helpful tips to improve sleep quality.
[COMFORTABLE BAND & LONG BATTERY LIFE] Crafted with a soft, lightweight silicone band, this kids pedometer is designed for all-day comfort. Enjoy a long-lasting battery life of up to 7 days on a single charge, with just a 2-hour recharge time.
[PERFECT GIFT FOR SPECIAL OCCASION] Packaged beautifully, the kids fitness watch makes an ideal gift for birthdays, Christmas, or any special occasion. Paired with BIGGERFIVE App, you can explore additional features and access detailed activity and health reports, making it a fantastic tool for both kids and parents.

BIGGERFIVE Kids Smart Watch, 1.8" Fitness Watch Pedometer, Heart Rate, IP68 Waterproof, Sleep Tracker, Calorie Step Counter, 5 Puzzle Games with/without APP for Girls Boys Teens 5-16, Nylon

21% OffFree Shipping

Why We Love It

Tracks all-day activity effortlessly.
Monitors real-time health metrics.
Ideal gift for active kids.

Main Highlights

All-Day Activity Tracking: BIGGERFIVE BRAVE 2 Smart Watch for Kids Teens Automatically counts steps, distance, calories burned, and active minutes. Supports 80 sports modes like walking, running, cycling, swimming(IP68 Waterproof), basketball, and more.
Without/With APP: BIGGERFIVE kids fitness tracker watch can be used seperately without APP and phone. But with APP, you could explore more functions. Compatible with Android 6.0+ and iOS 9.0+ smartphones.
Comprehensive Health Monitoring: Monitors real-time heart rate and tracks sleep patterns to promote your child's well-being.
Customizable Watch Face &1.8" HD Touch Screen：Our kids smartwatch boasts a 1.8" HD touch screen and offers 100+ exquisite cloud dials in APP BIGGERFIVE. Elevate personal style with custom dials using your kids' own photos and ignite their creativity!
Puzzle Gamems under Parents' Control: 5 built-in puzzle games can help train your child's reaction ability and calculation ability. You could restrict your child from playing games at school in the BIGGERFIVE APP (supports also lock game all the time).
Encourages Healthy Habits & Perfect Gift Idea: BIGGERFIVE kids smart watch motivates children to develop good exercise habits and stay healthier. Ideal gift for birthdays, Christmas, and other special occasions.

BIGGERFIVE Vigor 2 Fitness Tracker Watch for Kids Girls Boys Ages 5-12, Activity Tracker, Pedometer, Heart Rate Sleep Monitor, IP68 Waterproof Calorie Step Counter Watch, Great Kids Gift,Lilac

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Why We Love It

Comfortable and durable design.
Promotes active, healthy lifestyle.
Useful for sleep tracking.

Main Highlights

[MORE COMFORTABLE & DURABLE] The softer and skin-friendly liquid silicone strap is specially designed for children ages 5-12, for a more comfortable fit；Newly upgraded charging interface, safer and more durable, up to 7 days of battery life with 2 hours of fast charging.
[ALL-DAY ACTIVITY TRACKING & IP68 SWIMMING WATERPROOF] This 24-hour activity tracker automatically counts your children's steps, distance, and calories burned and activity minutes. It supports 10+ activity modes: Walking, Running, Cycling, Dancing, Basketball, Football, Tennis, Climbing, Workout, and more. It is rated IP68 waterproof so your kids can wear it during water activities and while enjoying pool time.
[HEART RATE, SLEEP TRACKING & SILENT ALARM CLOCK] The fitness tracker can automatically monitor your kids' daily real-time heart rate, track how well they sleep at night, and provide data about their sleep trends through the night in the app. The silent alarm clock can wake them up without disturbing others.
[WIDE COMPATIBILITY & EASY TO USE] Compatible with most Android 6.0+ and iOS 9.0+ smartphones; Upgraded to a more child-friendly interface, more easy-to-operate watch interface interaction; The family account makes it easier for parents to manage multiple kids trackers.
[PERFECT GIFT IDEAS FOR KIDS] Designed for children, BIGGERFIVE brand kids fitness trackers encourage kids to build good workout habits and be more healthy by enrouraging them to obtain virtual badges when they reach their excercise goals. Perfect gift ideas for kids' Birthday, Christmas and all other occasions.

Cloudpoem Smart Watch for Kids, Girls & Boys - Fitness Tracker with Pedometer, Heart Rate Monitor, Blood Oxygen, Sleep Tracker, Alarm Clocks, Puzzle Games, Calculator - IP68 Waterproof Children Gift

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Why We Love It

Easy for kids' usage.
Tracks daily activities effortlessly.
Monitors sleep and heart rate.

Main Highlights

【Easy to Use & Comfortable to Wear】Designed with kid's needs in mind. This kid smart watch was built for up, down, all-around action with a TPU watchband. 1.4 inch LCD color screen offers excellent HD image quality, 6 theme watch faces available. It is adjustable, comfortable, secure enough for kids to wear daily. The kids watch doesn't have call function, no need to stay connected with your phone also can work, all the functions are built-in the kids watch, very easy to operate for kids.
【All Day Activity Tracking】Automatically tracks your kids steps, distance and calories burned, better record all the exercise data to help kids reach their goals. Supports 9 activity modes: Indoor/Outdoor Walking, Indoor/Outdoor Running, Cycle, Dance, Basketball, Football, Badminton. Your workout progress can be simply viewed directly from the App "InxFit".
【Automatic Heart Rate & Sleep Monitor】24/7 heart rate monitoring and blood oxygen measurement can help you better understand the health of your children. Getting enough sleep is a crucial part of a healthy lifestyle, especially for school-aged kids. The smart watch automatically monitors your kid's sleeping patterns, provides you with sleep duration, hours of deep sleep and light sleep, wake-up times.
【Friendly Reminder】Parents can set some reminders on App, like drinking water reminder, sedentary reminder ect. Set an alarm to wake kids up with a gentle vibration in the morning, it will helps your kids develop sleep habits in technological ways. After that, your kids will activity without your company. It also can receive Call notifications, Text, Whatsapp and social media.
【Powerful Performance】The smart watch has rich functions, built-in 3 puzzle games, alarm clock, calculator, calendar, stopwatch, timer, wallpaper, etc. Kids can easily charge the watch with magnetic charging cable. The charging only takes up to 2 hours, but the battery lasts for about 5 days, which means kids spend less time charging and more time playing. IP68 waterproof capacity, free to wear it for washing hands and some water sports.

Tynggko Kids Smart Watch for Boys Girls, Fitness Tracker Watch with Pedometer, 65 Sport Modes, Heart Rate Sleep Monitor, Alarm Clock, Kids Gifts for Boys Girls Teens 10+ (Black)

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Why We Love It

Tracks activity all day.
Monitors sleep quality accurately.
Customizable and fun watch faces.

Main Highlights

All-day activity tracking: Automatically track your child's steps, distance, and calories burned. Supports 65 activity modes: skiing, football, basketball, running, walking, etc
Sleep monitoring: Kids watches can monitor children's sleep quality, including deep sleep, light sleep, and awake time, and parents will have a deeper understanding of their child's sleep. (Note: Measurement data is for reference only and cannot be used as medical monitoring data)
Customizable watch faces: The kids smart watch has a 1.69-inch HD touchscreen with 30 built-in watch faces to choose from. You can also customize the watch face or generate the desired watch face style through AI. Inspire your kids' creativity!
Wide compatibility and multi-language support: Compatible with Android 5.0+ and iOS 11.0+ smartphones. Kids sport watch supports English, German, French, Spain, Italy, Japanese, etc., with the mobile phone system language change.
Kids gifts for boys and girls: Kids smart watches are a good companion for children's daily life or sports. This watch will be a birthday, New Year, and Christmas gift for kids, boys, girls, and teens.

8.7

Excellent

We scanned 511 products

We reviewed these offers relevant to the Fitness Tracker For Kids within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Fitbit, Garmin, BIGGERFIVE, Slothcloud, Cloudpoem, Tynggko, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Fitness Tracker For Kids in the market, we considered we took a deep dive into 2556 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Fitbit Ace 3 Activity Tracker for Kids with Animated Clock Faces, Up to 8 days battery life & water resistant up to 50 m ,Black/Red. We love many things about this product by Fitbit. What sets it apart from the competition is Long-lasting battery life, Fun, engaging animations, Swim-friendly design.
The best value product for most shoppers and where user satisfaction is continuously the highest is Garmin vivofit Jr. 3 Fitness Tracker for Kids, Disney, The Little Mermaid (Renewed) by Garmin based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Fitness Tracker For Kids and the best cost-to-value ratio is BIGGERFIVE Kids Smart Watch, 1.8" Fitness Watch Pedometer, Heart Rate, IP68 Waterproof, Sleep Tracker, Calorie Step Counter, 5 Puzzle Games with/without APP for Girls Boys Teens 5-16, Nylonat BIGGERFIVE with a 21% discount.
Our list of the best Fitness Tracker For Kids is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Fitness Tracker For Kids in The UK

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We scanned 511 products

We concluded that: