# IPR BOOKS WV vs Music Notes

The clearest difference is in-app purchases: IPR BOOKS WV at none against Music Notes's 1. IPR BOOKS WV also leads on iOS requirement (9.0 vs 26.4). Music Notes's advantage is update cadence (every 10 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Music Notes sells 1 one-off in-app purchase. IPR BOOKS WV asks for nothing beyond the download.

IPR BOOKS WV ships an update every 2 months, Music Notes every 10 days. The most recent releases landed on September 27, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | IPR BOOKS WV | Music Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 6 MB | 76 MB |
| Requires iOS | **9.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Ltd IPRMedia](https://appshunter.io/developer/1310419373) | [Sami Kuribara](https://appshunter.io/developer/1891970492) |

## What reviewers say

### IPR BOOKS WV

[App page](https://appshunter.io/ios/app/ipr-books-wv-reader/id1329934077)

**Features:** macOS Compatibility

**In-app purchases:** none


### Music Notes

[App page](https://appshunter.io/ios/app/music-notes-learn-notation/id6780042275)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 100 Music Notes | $1.99 | one-time |


## Frequently asked questions

### Is IPR BOOKS WV free?

IPR BOOKS WV is free to download, with no in-app purchases.

### Is Music Notes free?

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

### Do IPR BOOKS WV or Music Notes have ads?

Neither IPR BOOKS WV nor Music Notes shows ads.

### Which is updated more often, IPR BOOKS WV or Music Notes?

IPR BOOKS WV ships an update every 2 months, and Music Notes every 10 days. Most recently, IPR BOOKS WV was updated on September 27, 2026 and Music Notes on September 24, 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.*