# DORM SDU vs HSK Ready

The clearest difference is in-app purchases: DORM SDU at none against HSK Ready's 1. DORM SDU also leads on ads (none vs shown) and iOS requirement (13.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. HSK Ready sells 1 one-off in-app purchase. DORM SDU asks for nothing beyond the download.

## The numbers

| Metric | DORM SDU | HSK Ready |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | — |
| Size | 19 MB | 16 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [GT TECHNOLOGIES COMPANY LIMITED](https://appshunter.io/developer/1592961916) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### DORM SDU

[App page](https://appshunter.io/ios/app/dorm-sdu/id6444823369)

**Features:** macOS Compatibility

**In-app purchases:** none


### HSK Ready

[App page](https://appshunter.io/ios/app/hsk-ready-learn-chinese/id6794975982)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is DORM SDU free?

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

### Is HSK Ready free?

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

### Do DORM SDU or HSK Ready have ads?

HSK Ready shows ads; DORM SDU does not.

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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.*