# Go Muscu vs RB perform

The clearest difference is in-app purchases: RB perform at none against Go Muscu's 1. RB perform also leads on update cadence (every 4 days vs every 2 weeks) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Go Muscu sells 1 one-off in-app purchase. RB perform asks for nothing beyond the download.

Go Muscu ships an update every 2 weeks, RB perform every 4 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Go Muscu | RB perform |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 4 MB | 31 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) | [Rayan Bonte](https://appshunter.io/developer/6776260339) |

## What reviewers say

### Go Muscu

[App page](https://appshunter.io/ios/app/go-muscu/id6499366811)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mode | Free | one-time |


### RB perform

[App page](https://appshunter.io/ios/app/rb-perform/id6776260337)

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

**In-app purchases:** none


## Frequently asked questions

### Is Go Muscu free?

Go Muscu is free to download, with in-app purchases available.

### Is RB perform free?

RB perform is free to download, with no in-app purchases.

### Do Go Muscu or RB perform have ads?

Neither Go Muscu nor RB perform shows ads.

### Which is updated more often, Go Muscu or RB perform?

Go Muscu ships an update every 2 weeks, and RB perform every 4 days. Most recently, Go Muscu was updated on October 30, 2026 and RB perform on October 28, 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.*