# GP vs 衡熵

The clearest difference is in-app purchases: GP at none against 衡熵's 3. GP also leads on iOS requirement (12.0 vs 18.6). 衡熵's advantage is device support. On price there is nothing between them.

Both are free to download. 衡熵 sells 3 in-app purchases, starting at $0.99 per month. GP asks for nothing beyond the download.

## The numbers

| Metric | GP | 衡熵 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Weekly |
| Size | 52 MB | 15 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [杏生 卢](https://appshunter.io/developer/1094592555) | [玉庭 何](https://appshunter.io/developer/1867438392) |

## What reviewers say

### GP

[App page](https://appshunter.io/ios/app/gp-a6x/id6449396506)

**In-app purchases:** none


### 衡熵

[App page](https://appshunter.io/ios/app/id6761233174)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 自律锁月度订阅 | $0.99 | per month |
| 自律锁年度订阅 | $3.99 | per year |
| 自律锁终身解锁 | $12.99 | one-time |


## Frequently asked questions

### Is GP free?

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

### Is 衡熵 free?

衡熵 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.*