# 風車 vs Krun

The clearest difference is in-app purchases: 風車 at none against Krun's 1. 風車 also leads on iOS requirement (10.0 vs 16.6). Krun's advantage is update cadence (every 3 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Krun sells 1 one-off in-app purchase. 風車 asks for nothing beyond the download.

風車 ships an update every 3 months, Krun every 3 days. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 風車 | Krun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/krun-spinner/id6757863339/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 6 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [Shinichiro Eto](https://appshunter.io/developer/1864675097) |

## What reviewers say

### 風車

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Krun

[App page](https://appshunter.io/ios/app/krun-spinner/id6757863339)

Engage with a digital pinwheel that creates captivating optical illusions as it spins and slows. Customize shapes, colors, and speed for a unique visual experience. It's a simple yet mesmerizing tool for all ages.

**Highlights:** Swipe-to-spin pinwheels, Illusions appear as rotation slows, Shape, color, and speed customization, Unlock all content, Remove ads

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $2.99 | one-time |


## Frequently asked questions

### Is 風車 free?

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

### Is Krun free?

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

### Do 風車 or Krun have ads?

Both 風車 and Krun show ads.

### Which is updated more often, 風車 or Krun?

風車 ships an update every 3 months, and Krun every 3 days. Most recently, 風車 was updated on October 15, 2026 and Krun on October 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.*