# HY Exhaust vs LessScreen | Boost Focus

The clearest difference is in-app purchases: HY Exhaust at none against LessScreen | Boost Focus's 3. HY Exhaust also leads on iOS requirement (11.0 vs 18.5). LessScreen | Boost Focus's advantage is update cadence (monthly vs every 2 months). 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. HY Exhaust asks for nothing beyond the download.

HY Exhaust ships an update every 2 months, LessScreen | Boost Focus monthly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HY Exhaust | LessScreen | Boost Focus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 29 MB | 18 MB |
| Requires iOS | **11.0** | 18.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [可 冯](https://appshunter.io/developer/991205890) | [小龙 郭](https://appshunter.io/developer/1834938273) |

## What reviewers say

### HY Exhaust

[App page](https://appshunter.io/ios/app/hy-exhaust/id1664446057)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is HY Exhaust free?

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

### Is LessScreen | Boost Focus free?

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

### Do HY Exhaust or LessScreen | Boost Focus have ads?

Neither HY Exhaust nor LessScreen | Boost Focus shows ads.

### Which is updated more often, HY Exhaust or LessScreen | Boost Focus?

HY Exhaust ships an update every 2 months, and LessScreen | Boost Focus monthly. Most recently, HY Exhaust was updated on November 3, 2026 and LessScreen | Boost Focus on November 5, 2026.

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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.*