# Eye DPI Test vs Retinal

The clearest difference is update cadence: Retinal at fortnightly against Eye DPI Test's every 25 months. Eye DPI Test's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Eye DPI Test ships an update every 25 months, Retinal fortnightly. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Eye DPI Test | Retinal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/eye-dpi-test/id926046519/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 15 MB | 1 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandr Varaksa](https://appshunter.io/developer/478681813) | [Nico Rohrbach](https://appshunter.io/developer/662717596) |

## What reviewers say

### Eye DPI Test

[App page](https://appshunter.io/ios/app/eye-dpi-test/id926046519)

This utility app helps you understand screen resolution and its impact on your vision. It explores concepts like 326 DPI and the perceived limits of screen or eye vision.

**Highlights:** Screen resolution analysis, Eye vision limit exploration, DPI concept explanation, Device compatibility check

**Features:** macOS Compatibility

**In-app purchases:** none


### Retinal

[App page](https://appshunter.io/ios/app/retinal/id1564557619)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Eye DPI Test free?

Eye DPI Test is free to download, with no in-app purchases.

### Is Retinal free?

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

### Do Eye DPI Test or Retinal have ads?

Neither Eye DPI Test nor Retinal shows ads.

### Which is updated more often, Eye DPI Test or Retinal?

Eye DPI Test ships an update every 25 months, and Retinal fortnightly. Most recently, Eye DPI Test was updated on October 7, 2026 and Retinal on October 11, 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.*