# Brook ARFlash vs Reaction Time Test

The clearest difference is in-app purchases: Reaction Time Test at none against Brook ARFlash's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Brook ARFlash sells 2 in-app purchases, starting at $0.99 per month. Reaction Time Test asks for nothing beyond the download.

Brook ARFlash ships an update every 2 weeks, Reaction Time Test every 8 days. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Brook ARFlash | Reaction Time Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (19 ratings)](https://appshunter.io/ios/app/brook-arflash/id6744020817/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 23.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | Free | — |
| Size | 35 MB | 5 MB |
| Requires iOS | **16.2** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zeroplus Technology Co, Ltd.](https://appshunter.io/developer/1539596932) | [Jinwan Kim](https://appshunter.io/developer/1446513824) |

## What reviewers say

### Brook ARFlash

[App page](https://appshunter.io/ios/app/brook-arflash/id6744020817)

Control virtual character movement routes with ease. Explore environments more freely and flexibly with this dedicated mobile application. Enhance your virtual exploration experience.

**Highlights:** Control virtual character movement routes, Flexible exploration experience, Dedicated mobile application, Enhance virtual exploration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 進階功能-月度方案 | $0.99 | per month |
| 進階功能-年度方案 | $9.99 | per year |


### Reaction Time Test

[App page](https://appshunter.io/ios/app/reaction-time-test-millis/id6805464656)

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

**In-app purchases:** none


## Frequently asked questions

### Is Brook ARFlash free?

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

### Is Reaction Time Test free?

Reaction Time Test is free to download, with no in-app purchases.

### Do Brook ARFlash or Reaction Time Test have ads?

Neither Brook ARFlash nor Reaction Time Test shows ads.

### Which is updated more often, Brook ARFlash or Reaction Time Test?

Brook ARFlash ships an update every 2 weeks, and Reaction Time Test every 8 days. Most recently, Brook ARFlash was updated on October 9, 2026 and Reaction Time Test on October 4, 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.*