# 21天计划 vs V587

The clearest difference is ads: 21天计划 at none against V587's shown. 21天计划 also leads on iOS requirement (12.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 21天计划 | V587 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Size | 42 MB | 86 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [红升 孙](https://appshunter.io/developer/1502418960) | [Shenzhen Lingqi Xingju Technology Co., Ltd.](https://appshunter.io/developer/6776480147) |

## What reviewers say

### 21天计划

[App page](https://appshunter.io/ios/app/21/id6754164973)

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

**In-app purchases:** none


### V587

[App page](https://appshunter.io/ios/app/v587/id6776480145)

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

**In-app purchases:** none


## Frequently asked questions

### Is 21天计划 free?

21天计划 is free to download, with no in-app purchases.

### Is V587 free?

V587 is free to download, with no in-app purchases.

### Do 21天计划 or V587 have ads?

V587 shows ads; 21天计划 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.*