# 心流时间 vs Brain Evolution

The clearest difference is in-app purchases: 心流时间 at none against Brain Evolution's 3. 心流时间 also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Brain Evolution sells 3 in-app purchases, starting at $1.99 per month. 心流时间 asks for nothing beyond the download.

## The numbers

| Metric | 心流时间 | Brain Evolution |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 39 MB | 2 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [北京动念智能科技有限公司](https://appshunter.io/developer/1781541269) | [建祥 陈](https://appshunter.io/developer/1782685807) |

## What reviewers say

### 心流时间

[App page](https://appshunter.io/ios/app/id6757784698)

**Features:** macOS Compatibility

**In-app purchases:** none


### Brain Evolution

[App page](https://appshunter.io/ios/app/brain-evolution-brain-games/id6793964136)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Evolution Pro Monthly | $1.99 | per month |
| Brain Evolution Pro Annual | $7.99 | per year |
| Brain Evolution Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is 心流时间 free?

心流时间 is free to download, with no in-app purchases.

### Is Brain Evolution free?

Brain Evolution is free to download, with in-app purchases available.

### Do 心流时间 or Brain Evolution have ads?

Neither 心流时间 nor Brain Evolution shows ads.

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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.*