# Dynamic Visual Acuity vs Keep your reflexes

The clearest difference is update cadence: Keep your reflexes at every 2 days against Dynamic Visual Acuity's every 39 months. 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.

Dynamic Visual Acuity ships an update every 39 months, Keep your reflexes every 2 days. The most recent releases landed on September 15, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Dynamic Visual Acuity | Keep your reflexes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 39 months | **Every 2 days** |
| Size | 6 MB | 5 MB |
| Requires iOS | **14.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Saki Inoue](https://appshunter.io/developer/1557109246) | [Masaharu Tsukamoto](https://appshunter.io/developer/939316877) |

## What reviewers say

### Dynamic Visual Acuity

[App page](https://appshunter.io/ios/app/dynamic-visual-acuity/id6447795260)

**Features:** macOS Compatibility

**In-app purchases:** none


### Keep your reflexes

[App page](https://appshunter.io/ios/app/keep-your-reflexes-flashfive/id6746483790)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dynamic Visual Acuity free?

Dynamic Visual Acuity is free to download, with no in-app purchases.

### Is Keep your reflexes free?

Keep your reflexes is free to download, with no in-app purchases.

### Do Dynamic Visual Acuity or Keep your reflexes have ads?

Both Dynamic Visual Acuity and Keep your reflexes show ads.

### Which is updated more often, Dynamic Visual Acuity or Keep your reflexes?

Dynamic Visual Acuity ships an update every 39 months, and Keep your reflexes every 2 days. Most recently, Dynamic Visual Acuity was updated on September 15, 2026 and Keep your reflexes on September 20, 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.*