# Learn Czech vs Unfog

The clearest difference is iOS requirement: Learn Czech at 15.1 against Unfog's 17.0. On price and in-app purchases there is nothing between them.

Both are free to download. Learn Czech sells 3 in-app purchases, starting at $3.99 per 7 days and Unfog sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Learn Czech | Unfog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Every 2 days |
| Size | 130 MB | 80 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Mustafa Uzun](https://appshunter.io/developer/1826846269) | [BITSEC SP. Z O.O.](https://appshunter.io/developer/1801990616) |

## What reviewers say

### Learn Czech

[App page](https://appshunter.io/ios/app/learn-czech-phrases-and-words/id6760581739)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $3.99 | per 7 days |
| Yearly Plan | $17.99 | per year |
| Lifetime | $24.99 | one-time |


### Unfog

[App page](https://appshunter.io/ios/app/unfog-feynman-study-notes/id6776245365)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unfog weekly | $2.99 | per 7 days |
| Unfog Monthly | $17.99 | per month |
| Unfog Annual | $29.99 | per year |


## Frequently asked questions

### Is Learn Czech free?

Learn Czech is free to download, with in-app purchases available.

### Is Unfog free?

Unfog is free to download, with in-app purchases available.

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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.*