# nota. ー 音楽理論クイズ vs OtoMaster

The clearest difference is in-app purchases: nota. ー 音楽理論クイズ at none against OtoMaster's 1. nota. ー 音楽理論クイズ also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. OtoMaster sells 1 one-off in-app purchase. nota. ー 音楽理論クイズ asks for nothing beyond the download.

## The numbers

| Metric | nota. ー 音楽理論クイズ | OtoMaster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | — |
| Size | 2 MB | 38 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KOHEI YAMASHITA](https://appshunter.io/developer/1876841861) | [HakutakuTech](https://appshunter.io/developer/6801648574) |

## What reviewers say

### nota. ー 音楽理論クイズ

[App page](https://appshunter.io/ios/app/nota/id6760968656)

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

**In-app purchases:** none


### OtoMaster

[App page](https://appshunter.io/ios/app/otomaster-note-and-ear-training/id6801648572)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


## Frequently asked questions

### Is nota. ー 音楽理論クイズ free?

nota. ー 音楽理論クイズ is free to download, with no in-app purchases.

### Is OtoMaster free?

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

### Do nota. ー 音楽理論クイズ or OtoMaster have ads?

OtoMaster shows ads; nota. ー 音楽理論クイズ does not.

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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.*