# PolyChain vs YouOfferHK

The clearest difference is in-app purchases: PolyChain at none against YouOfferHK's 6. PolyChain also leads on iOS requirement (12.4 vs 15.1). YouOfferHK's advantage is device support. On price there is nothing between them.

Both are free to download. YouOfferHK sells 6 one-off in-app purchases. PolyChain asks for nothing beyond the download.

## The numbers

| Metric | PolyChain | YouOfferHK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Fortnightly |
| Size | 13 MB | 113 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Hong Kong Polytechnic University](https://appshunter.io/developer/442903588) | [LVenture Studio Limited](https://appshunter.io/developer/1882931923) |

## What reviewers say

### PolyChain

[App page](https://appshunter.io/ios/app/polychain/id6444431184)

**In-app purchases:** none


### YouOfferHK

[App page](https://appshunter.io/ios/app/youofferhk/id6760162670)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3份AI擇校報告 | $8.99 | one-time |
| 10份AI擇校報告 | $24.99 | one-time |
| 申請文書 單校包 | $59.99 | one-time |
| 無限AI擇校報告 | $129.99 | one-time |
| 申請助手 3 校包 | $149.99 | one-time |
| 申請助手 7 校包 | $299.99 | one-time |


## Frequently asked questions

### Is PolyChain free?

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

### Is YouOfferHK free?

YouOfferHK 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.*