# 風車 vs Surprised!ReactionTimeChecker?

The clearest difference is update cadence: 風車 at every 3 months against Surprised!ReactionTimeChecker?'s every 6 months. 風車 also leads on iOS requirement (10.0 vs 15.6). On price, ads, 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.

風車 ships an update every 3 months, Surprised!ReactionTimeChecker? every 6 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | 風車 | Surprised!ReactionTimeChecker? |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | — | Ad-supported |
| Size | 25 MB | 24 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [NSC, K.K.](https://appshunter.io/developer/501890400) |

## What reviewers say

### 風車

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Surprised!ReactionTimeChecker?

[App page](https://appshunter.io/ios/app/surprisedreactiontimechecker/id553393907)

This app captures photos of users when they are startled by sudden fear images. It's designed for playful pranks to surprise friends and family, documenting their genuine reactions. Note that it utilizes sound effects even in silent mode and requires camera permissions.

**Highlights:** Sudden fear image display, Captures user's surprised photo, Sound effects in silent mode, Requires camera permission, Prank and surprise friends

**In-app purchases:** none


## Frequently asked questions

### Is 風車 free?

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

### Is Surprised!ReactionTimeChecker? free?

Surprised!ReactionTimeChecker? is free to download, with no in-app purchases.

### Do 風車 or Surprised!ReactionTimeChecker? have ads?

Both 風車 and Surprised!ReactionTimeChecker? show ads.

### Which is updated more often, 風車 or Surprised!ReactionTimeChecker??

風車 ships an update every 3 months, and Surprised!ReactionTimeChecker? every 6 months. Most recently, 風車 was updated on November 1, 2026 and Surprised!ReactionTimeChecker? on November 1, 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.*