# Fitbit Ace vs Solid Core

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.

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.

## The numbers

| Metric | Fitbit Ace | Solid Core |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (216 ratings)](https://appshunter.io/ios/app/fitbit-ace/id1621113388/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/solid-core/id6738000669/reviews) |
| Number of ratings | **216** | 1 |
| Positive reviews | 49.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 14 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 195 MB | 11 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Google](https://appshunter.io/developer/281956209) | [Konstantinos Anagnostakis](https://appshunter.io/developer/545699886) |

## What reviewers say

### Fitbit Ace

[App page](https://appshunter.io/ios/app/fitbit-ace/id1621113388)

Manage your child's Fitbit Ace LTE smartwatch. Securely call, text, track location, and monitor activity. Control contacts and ensure peace of mind.

**Highlights:** Secure calling and texting, Real-time location tracking, Activity level monitoring, Contact management, Child's smartwatch management

**In-app purchases:** none

**What reviewers like**

- 👍 Great for kids' independence
- 🔒 Safe communication for kids
- 📍 Reliable location tracking
- 🏃 Motivates kids to be active
- 👨‍👩‍👧‍👦 Easy for parents to use

**What reviewers complain about**

- 🚫 Incompatible with older iOS
- ⚠️ Inappropriate content risk
- 🚫 Features don't work offline
- 🎨 Awful UI aesthetics
- 🖼️ Cannot send images

**Reported bugs**

- 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

**Requested features**

- 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


### Solid Core

[App page](https://appshunter.io/ios/app/solid-core/id6738000669)

Manage your bookings, check your remaining visits, and get information on available services. Stay updated with the latest news and offers.

**Highlights:** Make bookings, View visit balance, Access service information, Receive news updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fitbit Ace free?

Fitbit Ace is free to download, with no in-app purchases.

### Is Solid Core free?

Solid Core is free to download, with no in-app purchases.

### Which has better reviews, Fitbit Ace or Solid Core?

Fitbit Ace is rated higher. Fitbit Ace averages 4.1 out of 5 from 216 ratings, while Solid Core averages 1.0 from 1 ratings.

### Do Fitbit Ace or Solid Core have ads?

Neither Fitbit Ace nor Solid Core shows ads.

### Which is updated more often, Fitbit Ace or Solid Core?

Fitbit Ace ships an update every 3 weeks, and Solid Core every 14 months. Most recently, Fitbit Ace was updated on October 7, 2026 and Solid Core on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*