# 変則将棋集 vs Sosu der

The clearest difference is iOS requirement: 変則将棋集 at 12.0 against Sosu der's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

変則将棋集 ships an update every 8 months, Sosu der every 4 months. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 変則将棋集 | Sosu der |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id441879253/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | **Every 4 months** |
| Size | 14 MB | 140 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MocoGame](https://appshunter.io/developer/400877587) | [Hirobumi Onishi](https://appshunter.io/developer/1740115066) |

## What reviewers say

### 変則将棋集

[App page](https://appshunter.io/ios/app/id441879253)

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

**In-app purchases:** none


### Sosu der

[App page](https://appshunter.io/ios/app/sosu-der/id6483364985)

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

**In-app purchases:** none


## Frequently asked questions

### Is 変則将棋集 free?

変則将棋集 is free to download, with no in-app purchases.

### Is Sosu der free?

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

### Do 変則将棋集 or Sosu der have ads?

Both 変則将棋集 and Sosu der show ads.

### Which is updated more often, 変則将棋集 or Sosu der?

変則将棋集 ships an update every 8 months, and Sosu der every 4 months. Most recently, 変則将棋集 was updated on October 23, 2026 and Sosu der on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*