Fitbit Ace vs Flyku
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fitbit Ace
Manage your child's Fitbit Ace LTE smartwatch. Securely call, text, track location, and monitor activity. Control contacts and ensure peace of mind.
- Secure calling and texting
- Real-time location tracking
- Activity level monitoring
- Contact management
- Child's smartwatch management
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The Fitbit Ace app is your home base for the Fitbit Ace LTE kids smartwatch. Use it to securely call or text message your child, see their location, check in on their activity levels, and manage their contacts. If you’re invited as a contact, you can also use the Fitbit Ace app to securely call or send messages to a child’s Fitbit Ace LTE smartwatch. *Fitbit Ace LTE device requires a paid Ace Pass data plan. Some features only available for kids with a supervised Google Account. Learn more about privacy for Fitbit Ace at g.co/fitbitace/privacy
Flyku
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Flyku is the world’s largest hub for runners, bringing together running clubs, training tools, and apparel in one powerful platform. Whether you're a beginner starting your first run or an experienced athlete chasing your next PR, Flyku helps you connect, train, and level up your running journey. Discover Running Clubs Find and join running clubs near you or across the globe. Connect with like-minded runners, participate in group runs, and stay motivated together. Train Smarter Access structured training programs, track your progress, and improve your performance with tools designed for runners of all levels. Explore Running Apparel Browse and discover the latest running gear and apparel—all in one place. Find what you need to perform at your best. Global Running Community Be part of a growing network of runners. Share your journey, discover new routes, and get inspired by others around the world. Personalized Experience Get tailored recommendations for clubs, training plans, and gear based on your preferences and goals. Why Flyku? Largest running club network Built for all levels of runners Training + community + gear in one app Discover and connect globally Simple, fast, and powerful experience Whether you run for fitness, competition, or passion—Flyku is your ultimate running companion.
Screenshots
Verdict
The clearest difference is update cadence: Flyku at every 2 weeks against Fitbit Ace's every 3 weeks. Flyku also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Fitbit Ace ships an update every 3 weeks, Flyku every 2 weeks. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.
| Parameter | Fitbit Ace | Flyku |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (216 ratings) — better | — |
| Positive reviews | 49.1% of reviews | — |
| Number of ratings | 216 — better | — |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 195 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | SystemStar LLC | |
Bugs and requests
Fitbit Ace
Reported bugs
15 issues- Location, calling, and messaging features not working when disconnected from WiFi
- Incoming calls on iPhone from Fitbit Ace have no sound, only vibration
- Message history lost when moving to a new phone
- App does not connect to the watch
- App never loads or says no connection
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- App stops working and requires restoration
- Customer service never responded
- Some messages are delayed
- Some messages disappear after a bit
- Takes forever to receive text and update location
- App immediately asks for country and says not allowed
- App is completely unusable, clicking does nothing
- App freezes and nothing can be clicked
- Cannot invite spouse to family account
- Cannot contact other kids or their friends, only adults
Requested features
15 requests- Allow adjusting theme or colors
- Add basic features like photo sharing
- Allow communication between friends with watches
- Enable parents to approve friend connections
- Allow grandparents abroad to use the app
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- Add more parental control options
- More parental settings needed
- Add voice message feature for parents
- More child safety features updates
- More family quests
- More customization of night time hours
- Increase size of keyboard buttons
- Enable parents to call even during school time
- Modify goals to include other exercises
- UI tweaks for better user experience
Flyku
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Fitbit Ace
No in-app purchases
Flyku
No in-app purchases
Questions
Is Fitbit Ace free?
Is Flyku free?
Do Fitbit Ace or Flyku have ads?
Which is updated more often, Fitbit Ace or Flyku?
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