# Rapid Eye Test vs T3trisd

The clearest difference is in-app purchases: T3trisd at none against Rapid Eye Test's 1. T3trisd also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Rapid Eye Test sells 1 one-off in-app purchase. T3trisd asks for nothing beyond the download.

Rapid Eye Test ships an update every 3 months, T3trisd every 2 months. The most recent releases landed on October 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Rapid Eye Test | T3trisd |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 142 MB | 83 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NURI YANG](https://appshunter.io/developer/1667210977) | [Francisco Reinosa Sanchez](https://appshunter.io/developer/526096410) |

## What reviewers say

### 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 |


### T3trisd

[App page](https://appshunter.io/ios/app/t3trisd/id6463521202)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rapid Eye Test free?

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

### Is T3trisd free?

T3trisd is free to download, with no in-app purchases.

### Do Rapid Eye Test or T3trisd have ads?

Both Rapid Eye Test and T3trisd show ads.

### Which is updated more often, Rapid Eye Test or T3trisd?

Rapid Eye Test ships an update every 3 months, and T3trisd every 2 months. Most recently, Rapid Eye Test was updated on October 25, 2026 and T3trisd on October 5, 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.*