# Learn Sushi vs Onsei

The clearest difference is in-app purchases: Onsei at none against Learn Sushi's 1. Learn Sushi's advantage is iOS requirement (6.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Learn Sushi sells 1 one-off in-app purchase. Onsei asks for nothing beyond the download.

Learn Sushi ships an update fortnightly, Onsei every 10 days. The most recent releases landed on November 6, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Learn Sushi | Onsei |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Size | 35 MB | 33 MB |
| Requires iOS | **6.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Kozo Terai](https://appshunter.io/developer/817321452) | [鑫 陈](https://appshunter.io/developer/1709457072) |

## What reviewers say

### Learn Sushi

[App page](https://appshunter.io/ios/app/learn-sushi/id817321449)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads for Learn Sushi | $0.99 | one-time |


### Onsei

[App page](https://appshunter.io/ios/app/onsei/id6761715885)

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

**In-app purchases:** none


## Frequently asked questions

### Is Learn Sushi free?

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

### Is Onsei free?

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

### Do Learn Sushi or Onsei have ads?

Neither Learn Sushi nor Onsei shows ads.

### Which is updated more often, Learn Sushi or Onsei?

Learn Sushi ships an update fortnightly, and Onsei every 10 days. Most recently, Learn Sushi was updated on November 6, 2026 and Onsei on November 9, 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.*