# Prats Optic vs Eye Training Tool

The clearest difference is price: Prats Optic at Free against Eye Training Tool's $9.99. Prats Optic also leads on iOS requirement (9.3 vs 13.0). Eye Training Tool's advantage is device support (4 vs 1). On update cadence, ads and in-app purchases there is nothing between them.

Prats Optic is free to download; Eye Training Tool costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Prats Optic ships an update every 5 months, Eye Training Tool every 4 months. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Prats Optic | Eye Training Tool |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | — | Paid |
| Size | 433 MB | 55 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Perception Technologies S.L.](https://appshunter.io/developer/643656923) | [Shanghai Liaoxiang Technology Co., Ltd.](https://appshunter.io/developer/1497850980) |

## What reviewers say

### Prats Optic

[App page](https://appshunter.io/ios/app/prats-optic/id1499386886)

**Features:** macOS Compatibility

**In-app purchases:** none


### Eye Training Tool

[App page](https://appshunter.io/ios/app/eye-training-tool/id1634970491)

This app offers scientific eye relaxation and visual perception exercises based on neuroplasticity and optometry principles. It features Gabor pattern training, dynamic visual tracking, and accommodation exercises to improve visual acuity, eye muscle flexibility, and reduce eye strain.

**Highlights:** Gabor visual perception training, Dynamic visual tracking exercises, Accommodation and convergence assistance, Eye muscle relaxation techniques, Binocular coordination training, Scientific eye relaxation programs

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Prats Optic free?

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

### Is Eye Training Tool free?

Eye Training Tool costs $9.99, with no in-app purchases.

### Do Prats Optic or Eye Training Tool have ads?

Neither Prats Optic nor Eye Training Tool shows ads.

### Which is updated more often, Prats Optic or Eye Training Tool?

Prats Optic ships an update every 5 months, and Eye Training Tool every 4 months. Most recently, Prats Optic was updated on October 5, 2026 and Eye Training Tool on October 13, 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.*