# Absolute Permeability vs Учи.Про

The clearest difference is iOS requirement: Absolute Permeability at 9.0 against Учи.Про's 17.0. 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.

## The numbers

| Metric | Absolute Permeability | Учи.Про |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Size | 78 MB | 61 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Natalia Shelyago](https://appshunter.io/developer/1618907003) | [Учи.Про](https://appshunter.io/developer/1811326031) |

## What reviewers say

### Absolute Permeability

[App page](https://appshunter.io/ios/app/absolute-permeability/id1483740033)

**Features:** macOS Compatibility

**In-app purchases:** none


### Учи.Про

[App page](https://appshunter.io/ios/app/id6745216702)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Absolute Permeability free?

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

### Is Учи.Про free?

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

### Do Absolute Permeability or Учи.Про have ads?

Neither Absolute Permeability nor Учи.Про shows ads.

---

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