# Go Muscu vs Delta

The clearest difference is update cadence: Delta at every 3 days against Go Muscu's every 2 weeks. Delta also leads on iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Go Muscu sells 1 one-off in-app purchase and Delta sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Go Muscu ships an update every 2 weeks, Delta every 3 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Go Muscu | Delta |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 4 MB | 62 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) | [MITHUN NATH EDAKKATTU MAYOORANADHAN](https://appshunter.io/developer/1866326672) |

## 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 |


### Delta

[App page](https://appshunter.io/ios/app/delta-progressive-overload/id6760977282)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delta Premium - Monthly | $4.99 | per month |
| Delta Premium - Annually | $49.99 | per year |


## Frequently asked questions

### Is Go Muscu free?

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

### Is Delta free?

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

### Do Go Muscu or Delta have ads?

Neither Go Muscu nor Delta shows ads.

### Which is updated more often, Go Muscu or Delta?

Go Muscu ships an update every 2 weeks, and Delta every 3 days. Most recently, Go Muscu was updated on October 30, 2026 and Delta 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.*