# サカゼン公式アプリ / SAKAZEN 公式アプリ vs K2Stone

The clearest difference is ads: K2Stone at none against サカゼン公式アプリ / SAKAZEN 公式アプリ's shown. K2Stone also leads on update cadence (every 4 weeks vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

サカゼン公式アプリ / SAKAZEN 公式アプリ ships an update every 6 months, K2Stone every 4 weeks. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | サカゼン公式アプリ / SAKAZEN 公式アプリ | K2Stone |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Size | 28 MB | 36 MB |
| Requires iOS | 16.1.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SAKAZEN SHOJI CO.,LTD](https://appshunter.io/developer/969374643) | [fei chang](https://appshunter.io/developer/1797916026) |

## What reviewers say

### サカゼン公式アプリ / SAKAZEN 公式アプリ

[App page](https://appshunter.io/ios/app/sakazen/id969374644)

**In-app purchases:** none


### K2Stone

[App page](https://appshunter.io/ios/app/k2stone/id6742342964)

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

**In-app purchases:** none


## Frequently asked questions

### Is サカゼン公式アプリ / SAKAZEN 公式アプリ free?

サカゼン公式アプリ / SAKAZEN 公式アプリ is free to download, with no in-app purchases.

### Is K2Stone free?

K2Stone is free to download, with no in-app purchases.

### Do サカゼン公式アプリ / SAKAZEN 公式アプリ or K2Stone have ads?

サカゼン公式アプリ / SAKAZEN 公式アプリ shows ads; K2Stone does not.

### Which is updated more often, サカゼン公式アプリ / SAKAZEN 公式アプリ or K2Stone?

サカゼン公式アプリ / SAKAZEN 公式アプリ ships an update every 6 months, and K2Stone every 4 weeks. Most recently, サカゼン公式アプリ / SAKAZEN 公式アプリ was updated on November 6, 2026 and K2Stone on November 8, 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.*