# LearnSousyo byNSDev vs Yoki

The clearest difference is ads: LearnSousyo byNSDev at none against Yoki's shown. LearnSousyo byNSDev also leads on iOS requirement (12.0 vs 15.6). Yoki's advantage is update cadence (every 9 days vs every 7 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LearnSousyo byNSDev ships an update every 7 months, Yoki every 9 days. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | LearnSousyo byNSDev | Yoki |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 9 days** |
| Size | 41 MB | 28 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [Hidenori Ishiii](https://appshunter.io/developer/1440959870) |

## What reviewers say

### LearnSousyo byNSDev

[App page](https://appshunter.io/ios/app/learnsousyo-bynsdev/id1255122571)

**Features:** macOS Compatibility

**In-app purchases:** none


### Yoki

[App page](https://appshunter.io/ios/app/yoki-kana/id6751323760)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LearnSousyo byNSDev free?

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

### Is Yoki free?

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

### Do LearnSousyo byNSDev or Yoki have ads?

Yoki shows ads; LearnSousyo byNSDev does not.

### Which is updated more often, LearnSousyo byNSDev or Yoki?

LearnSousyo byNSDev ships an update every 7 months, and Yoki every 9 days. Most recently, LearnSousyo byNSDev was updated on October 14, 2026 and Yoki on October 3, 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.*