# LetterMe vs Knax

The clearest difference is in-app purchases: Knax at none against LetterMe's 3. Knax also leads on device support. LetterMe's advantage is iOS requirement (12.0 vs 16.6). On price there is nothing between them.

Both are free to download. LetterMe sells 3 one-off in-app purchases. Knax asks for nothing beyond the download.

## The numbers

| Metric | LetterMe | Knax |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 6 weeks |
| Size | 159 MB | 2 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [Undone Games](https://appshunter.io/developer/1650966366) | [Jan Hultstrom](https://appshunter.io/developer/1057981531) |

## What reviewers say

### LetterMe

[App page](https://appshunter.io/ios/app/letterme/id6443954855)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Coin Bundle | $0.49 | one-time |
| Medium Coin Bundle | $3.99 | one-time |
| Large Coin Bundle | $14.99 | one-time |


### Knax

[App page](https://appshunter.io/ios/app/knax/id6503453192)

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

**In-app purchases:** none


## Frequently asked questions

### Is LetterMe free?

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

### Is Knax free?

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

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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.*