# LessScreen | Boost Focus vs 手指钢琴练习

The clearest difference is in-app purchases: 手指钢琴练习 at none against LessScreen | Boost Focus's 3. 手指钢琴练习 also leads on iOS requirement (15.6 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. LessScreen | Boost Focus sells 3 in-app purchases, starting at $0.99 per month. 手指钢琴练习 asks for nothing beyond the download.

## The numbers

| Metric | LessScreen | Boost Focus | 手指钢琴练习 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 18 MB | 3 MB |
| Requires iOS | 18.5 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [小龙 郭](https://appshunter.io/developer/1834938273) | [Van Anh Dinh Thi](https://appshunter.io/developer/1863676460) |

## What reviewers say

### LessScreen | Boost Focus

[App page](https://appshunter.io/ios/app/lessscreen-boost-focus/id6753039898)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | per month |
| 年度会员 | $3.99 | per year |
| 永久会员 | $6.99 | one-time |


### 手指钢琴练习

[App page](https://appshunter.io/ios/app/id6757911567)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LessScreen | Boost Focus free?

LessScreen | Boost Focus is free to download, with in-app purchases available.

### Is 手指钢琴练习 free?

手指钢琴练习 is free to download, with no in-app purchases.

### Do LessScreen | Boost Focus or 手指钢琴练习 have ads?

Neither LessScreen | Boost Focus nor 手指钢琴练习 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.*