# 風車 vs Mental Dice

The clearest difference is price: 風車 at Free against Mental Dice's $3.99. 風車 also leads on update cadence (every 3 months vs every 26 months) and iOS requirement (10.0 vs 16.0). Mental Dice's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

風車 is free to download; Mental Dice costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

風車 ships an update every 3 months, Mental Dice every 26 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 風車 | Mental Dice |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 26 months |
| Size | 25 MB | 1 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [matsumoto yuuki](https://appshunter.io/developer/984437953) |

## What reviewers say

### 風車

[App page](https://appshunter.io/ios/app/id378538317)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mental Dice

[App page](https://appshunter.io/ios/app/mental-dice/id1580340447)

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

**In-app purchases:** none


## Frequently asked questions

### Is 風車 free?

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

### Is Mental Dice free?

Mental Dice costs $3.99, with no in-app purchases.

### Do 風車 or Mental Dice have ads?

風車 shows ads; Mental Dice does not.

### Which is updated more often, 風車 or Mental Dice?

風車 ships an update every 3 months, and Mental Dice every 26 months. Most recently, 風車 was updated on October 27, 2026 and Mental Dice 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.*