Fitbit Ace vs Solid Core
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
Solid Core
Manage your bookings, check your remaining visits, and get information on available services. Stay updated with the latest news and offers.
- Make bookings
- View visit balance
- Access service information
- Receive news updates
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Μέσω της εφαρμογής Solid Core μπορείτε να κάνετε τις κρατήσεις σας, να δείτε το υπόλοιπο των επισκέψεων και τις πληροφορίες σχετικά με τις υπηρεσίες που μπορείτε να κάνετε κράτηση, ενω παράλληλα ενημερώνεστε για τα νέα μας
Screenshots
Verdict
The clearest difference is rating: Fitbit Ace at 4.1 against Solid Core's 1.0. Fitbit Ace also leads on update cadence (every 3 weeks vs every 14 months) and ratings volume (216 vs 1). Solid Core's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support 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 holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Fitbit Ace has 216 ratings behind it against 1, so its average is the more settled of the two.
Fitbit Ace ships an update every 3 weeks, Solid Core every 14 months. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.
| Parameter | Fitbit Ace | Solid Core |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (216 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 49.1% of reviews | — |
| Number of ratings | 216 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 195 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Konstantinos Anagnostakis | |
Customer experience
Fitbit Ace
Solid Core
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
Solid Core
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Fitbit Ace
No in-app purchases
Solid Core
No in-app purchases
