# Chá vs Du

The clearest difference is in-app purchases: Chá at none against Du's 1. Du's advantage is iOS requirement (16.4 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Du sells 1 one-off in-app purchase. Chá asks for nothing beyond the download.

## The numbers

| Metric | Chá | Du |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 4 MB | 55 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wiktoria Wisniewska](https://appshunter.io/developer/6777666939) | [Redd King LLC](https://appshunter.io/developer/555304700) |

## What reviewers say

### Chá

[App page](https://appshunter.io/ios/app/cha-learn-chinese/id6777666937)

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

**In-app purchases:** none


### Du

[App page](https://appshunter.io/ios/app/du-learn-chinese/id6777808844)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $1.99 | one-time |


## Frequently asked questions

### Is Chá free?

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

### Is Du free?

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

### Do Chá or Du have ads?

Neither Chá nor Du shows ads.

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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.*