# nota. ー 音楽理論クイズ vs ことり

The clearest difference is in-app purchases: nota. ー 音楽理論クイズ at none against ことり's 1. nota. ー 音楽理論クイズ also leads on update cadence (every 5 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ことり sells 1 in-app purchase, starting at $0.99 per month. nota. ー 音楽理論クイズ asks for nothing beyond the download.

nota. ー 音楽理論クイズ ships an update every 5 days, ことり monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | nota. ー 音楽理論クイズ | ことり |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Size | 2 MB | 123 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOHEI YAMASHITA](https://appshunter.io/developer/1876841861) | [HANAUTA INC.](https://appshunter.io/developer/492009717) |

## 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


### ことり

[App page](https://appshunter.io/ios/app/id6770269230)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ことり Premium | $0.99 | per month |


## 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 ことり free?

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

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

Neither nota. ー 音楽理論クイズ nor ことり shows ads.

### Which is updated more often, nota. ー 音楽理論クイズ or ことり?

nota. ー 音楽理論クイズ ships an update every 5 days, and ことり monthly. Most recently, nota. ー 音楽理論クイズ was updated on October 25, 2026 and ことり 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.*