# Virtual OKN vs Biofoton 2

The clearest difference is update cadence: Virtual OKN at every 6 days against Biofoton 2's fortnightly. Virtual OKN also leads on iOS requirement (6.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Virtual OKN ships an update every 6 days, Biofoton 2 fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Virtual OKN | Biofoton 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/virtual-okn/id1191829967/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Free | — |
| Size | 107 MB | 58 MB |
| Requires iOS | **6.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [4r Soluciones S.R.L.](https://appshunter.io/developer/593878537) | [Silversalud](https://appshunter.io/developer/1531298685) |

## What reviewers say

### Virtual OKN

[App page](https://appshunter.io/ios/app/virtual-okn/id1191829967)

This app provides optokinetic stimulus training for visual dizziness rehabilitation. It is intended for use under the guidance of a qualified healthcare professional. Consult your doctor before using this application.

**Highlights:** Optokinetic stimulus training, Visual dizziness rehabilitation, Healthcare professional guidance, Doctor consultation recommended

**Features:** macOS Compatibility

**In-app purchases:** none


### Biofoton 2

[App page](https://appshunter.io/ios/app/biofoton-2/id1540559778)

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

**In-app purchases:** none


## Frequently asked questions

### Is Virtual OKN free?

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

### Is Biofoton 2 free?

Biofoton 2 is free to download, with no in-app purchases.

### Do Virtual OKN or Biofoton 2 have ads?

Neither Virtual OKN nor Biofoton 2 shows ads.

### Which is updated more often, Virtual OKN or Biofoton 2?

Virtual OKN ships an update every 6 days, and Biofoton 2 fortnightly. Most recently, Virtual OKN was updated on October 24, 2026 and Biofoton 2 on October 24, 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.*