# CHM Sharp vs FocusLock

The clearest difference is price: CHM Sharp at Free against FocusLock's $0.99. CHM Sharp also leads on iOS requirement (14.0 vs 17.4). FocusLock's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

CHM Sharp is free to download; FocusLock costs $0.99 up front. CHM Sharp sells 1 one-off in-app purchase. FocusLock asks for nothing beyond the download.

CHM Sharp ships an update every 4 months, FocusLock every 2 weeks. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | CHM Sharp | FocusLock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.8 (11 ratings)](https://appshunter.io/ios/app/chm-sharp/id467098001/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 68.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 22 MB |
| Requires iOS | **14.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [顺飞 邹](https://appshunter.io/developer/1860143841) |

## What reviewers say

### CHM Sharp

[App page](https://appshunter.io/ios/app/chm-sharp/id467098001)

This app is a reader for CHM (Microsoft Compiled HTML Help) documents on iOS devices. It allows for file management, searching within documents, and various viewing options. Transfer files easily via Wi-Fi or iTunes.

**Highlights:** CHM document reader, File sorting and searching, File management (copy, move, delete), Wi-Fi and iTunes file transfer, In-document search and highlighting, Pinch-to-zoom support, Bookmark functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.99 | one-time |


### FocusLock

[App page](https://appshunter.io/ios/app/focuslock-smart-app-lock/id6760992215)

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

**In-app purchases:** none


## Frequently asked questions

### Is CHM Sharp free?

CHM Sharp is free to download, with in-app purchases available.

### Is FocusLock free?

FocusLock costs $0.99, with no in-app purchases.

### Do CHM Sharp or FocusLock have ads?

CHM Sharp shows ads; FocusLock does not.

### Which is updated more often, CHM Sharp or FocusLock?

CHM Sharp ships an update every 4 months, and FocusLock every 2 weeks. Most recently, CHM Sharp was updated on October 13, 2026 and FocusLock on October 3, 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.*