# AO vs Music Diary

The clearest difference is in-app purchases: Music Diary at none against AO's 3. AO's advantage is update cadence (weekly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AO sells 3 one-off in-app purchases. Music Diary asks for nothing beyond the download.

AO ships an update weekly, Music Diary every 4 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | AO | Music Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Size | 13 MB | 6 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fujishima Tomokazu](https://appshunter.io/developer/1892404244) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### AO

[App page](https://appshunter.io/ios/app/ao-ringo-player/id6762004779)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee Support | $0.99 | one-time |
| Premium Coffee Support | $1.99 | one-time |
| Coffee & Cake Support | $3.99 | one-time |


### Music Diary

[App page](https://appshunter.io/ios/app/music-diary-song-list-notes/id6772138621)

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

**In-app purchases:** none


## Frequently asked questions

### Is AO free?

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

### Is Music Diary free?

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

### Do AO or Music Diary have ads?

Neither AO nor Music Diary shows ads.

### Which is updated more often, AO or Music Diary?

AO ships an update weekly, and Music Diary every 4 months. Most recently, AO was updated on October 25, 2026 and Music Diary on October 25, 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.*