# Fitbit Ace vs RF BUILD

The clearest difference is iOS requirement: RF BUILD at 15.1 against Fitbit Ace's 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.

## The numbers

| Metric | Fitbit Ace | RF BUILD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (223 ratings)](https://appshunter.io/ios/app/fitbit-ace/id1621113388/reviews)** | — |
| Number of ratings | **223** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 196 MB | 44 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Google](https://appshunter.io/developer/281956209) | [REUBEN CRAIG CONWAY FERGUSON](https://appshunter.io/developer/1896323762) |

## 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


### RF BUILD

[App page](https://appshunter.io/ios/app/rf-build-virtual-diet-coach/id6766773584)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fitbit Ace free?

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

### Is RF BUILD free?

RF BUILD is free to download, with no in-app purchases.

### Do Fitbit Ace or RF BUILD have ads?

Neither Fitbit Ace nor RF BUILD shows ads.

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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.*