# Countless vs Rapid Eye Test

The clearest difference is in-app purchases: Countless at none against Rapid Eye Test's 1. Countless also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Rapid Eye Test sells 1 one-off in-app purchase. Countless asks for nothing beyond the download.

Countless ships an update every 5 months, Rapid Eye Test every 3 months. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Countless | Rapid Eye Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 months** |
| Size | 77 MB | 142 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Valerio Manuel Sevilla Gutierrez](https://appshunter.io/developer/542915246) | [NURI YANG](https://appshunter.io/developer/1667210977) |

## What reviewers say

### Countless

[App page](https://appshunter.io/ios/app/countless-ability-game/id1148376498)

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

**In-app purchases:** none


### Rapid Eye Test

[App page](https://appshunter.io/ios/app/rapid-eye-test-hyper-peepers/id6446809775)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Countless free?

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

### Is Rapid Eye Test free?

Rapid Eye Test is free to download, with in-app purchases available.

### Do Countless or Rapid Eye Test have ads?

Rapid Eye Test shows ads; Countless does not.

### Which is updated more often, Countless or Rapid Eye Test?

Countless ships an update every 5 months, and Rapid Eye Test every 3 months. Most recently, Countless was updated on October 3, 2026 and Rapid Eye Test 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.*