# GPMuse vs Notation

The clearest difference is in-app purchases: GPMuse at none against Notation's 2. GPMuse also leads on ads (none vs shown). Notation's advantage is update cadence (weekly vs every 2 weeks) and iOS requirement (15.6 vs 18.6). On price and device support there is nothing between them.

Both are free to download. Notation sells 2 in-app purchases, starting at $2.99 per 7 days. GPMuse asks for nothing beyond the download.

GPMuse ships an update every 2 weeks, Notation weekly. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | GPMuse | Notation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 37 MB | 41 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hung Truong Khanh](https://appshunter.io/developer/1762420034) | [凯 张](https://appshunter.io/developer/1879659677) |

## What reviewers say

### GPMuse

[App page](https://appshunter.io/ios/app/gpmuse-music-notation/id6761681276)

**Features:** Vision Pro support

**In-app purchases:** none


### Notation

[App page](https://appshunter.io/ios/app/notation-sheet-music-maker/id6774178274)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription · NotationAI | $2.99 | per 7 days |
| Lifetime Access · NotationAI | $19.99 | one-time |


## Frequently asked questions

### Is GPMuse free?

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

### Is Notation free?

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

### Do GPMuse or Notation have ads?

Notation shows ads; GPMuse does not.

### Which is updated more often, GPMuse or Notation?

GPMuse ships an update every 2 weeks, and Notation weekly. Most recently, GPMuse was updated on September 8, 2026 and Notation on September 10, 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.*