# Prats Optic vs VisuDoc

The clearest difference is update cadence: VisuDoc at every 2 months against Prats Optic's every 5 months. VisuDoc also leads on device support (3 vs 1). Prats Optic's advantage is iOS requirement (9.3 vs 13.0). 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.

Prats Optic ships an update every 5 months, VisuDoc every 2 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Prats Optic | VisuDoc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Size | 433 MB | 169 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Perception Technologies S.L.](https://appshunter.io/developer/643656923) | [VisuScience Meditech Co., Ltd.](https://appshunter.io/developer/1560274516) |

## What reviewers say

### Prats Optic

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

**Features:** macOS Compatibility

**In-app purchases:** none


### VisuDoc

[App page](https://appshunter.io/ios/app/visudoc/id1607945289)

**Features:** macOS Compatibility, 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 VisuDoc free?

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

### Do Prats Optic or VisuDoc have ads?

Neither Prats Optic nor VisuDoc shows ads.

### Which is updated more often, Prats Optic or VisuDoc?

Prats Optic ships an update every 5 months, and VisuDoc every 2 months. Most recently, Prats Optic was updated on October 5, 2026 and VisuDoc on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*