# 简则MBTI vs How睡眠

The clearest difference is in-app purchases: 简则MBTI at none against How睡眠's 5. 简则MBTI also leads on iOS requirement (11.0 vs 14.0). How睡眠's advantage is device support. On price there is nothing between them.

Both are free to download. How睡眠 sells 5 one-off in-app purchases. 简则MBTI asks for nothing beyond the download.

## The numbers

| Metric | 简则MBTI | How睡眠 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 2 weeks |
| Size | 13 MB | 138 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | — | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Shanghai Jianze Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1660014012) | [重庆鲤想派科技有限公司](https://appshunter.io/developer/1810646324) |

## What reviewers say

### 简则MBTI

[App page](https://appshunter.io/ios/app/mbti/id1660014010)

**In-app purchases:** none


### How睡眠

[App page](https://appshunter.io/ios/app/how/id6746926603)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $9.99 | one-time |
| 季度会员 | $24.99 | one-time |
| 优惠永久会员 | $29.99 | one-time |
| 年度会员 | $99.99 | one-time |
| 永久会员 | $299.99 | one-time |


## Frequently asked questions

### Is 简则MBTI free?

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

### Is How睡眠 free?

How睡眠 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.*