# Dynamic Visual Acuity vs Ring Rush

The clearest difference is in-app purchases: Dynamic Visual Acuity at none against Ring Rush's 1. Ring Rush's advantage is update cadence (every 2 days vs every 39 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ring Rush sells 1 one-off in-app purchase. Dynamic Visual Acuity asks for nothing beyond the download.

Dynamic Visual Acuity ships an update every 39 months, Ring Rush every 2 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Dynamic Visual Acuity | Ring Rush |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 39 months | **Every 2 days** |
| Size | 6 MB | 75 MB |
| Requires iOS | 14.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Saki Inoue](https://appshunter.io/developer/1557109246) | [Hirotaka Kouso](https://appshunter.io/developer/1848885745) |

## What reviewers say

### Dynamic Visual Acuity

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring Rush

[App page](https://appshunter.io/ios/app/ring-rush-dynamic-vision/id6762827970)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Rush プレミアム | $2.99 | one-time |


## Frequently asked questions

### Is Dynamic Visual Acuity free?

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

### Is Ring Rush free?

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

### Do Dynamic Visual Acuity or Ring Rush have ads?

Both Dynamic Visual Acuity and Ring Rush show ads.

### Which is updated more often, Dynamic Visual Acuity or Ring Rush?

Dynamic Visual Acuity ships an update every 39 months, and Ring Rush every 2 days. Most recently, Dynamic Visual Acuity was updated on October 2, 2026 and Ring Rush on September 30, 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.*