# CHM Sharp vs KF Lounge

The clearest difference is in-app purchases: KF Lounge at none against CHM Sharp's 1. KF Lounge also leads on ads (none vs shown) and update cadence (every 2 months vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CHM Sharp sells 1 one-off in-app purchase. KF Lounge asks for nothing beyond the download.

CHM Sharp ships an update every 4 months, KF Lounge every 2 months. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CHM Sharp | KF Lounge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (11 ratings)](https://appshunter.io/ios/app/chm-sharp/id467098001/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 67.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 22 MB |
| Requires iOS | 14.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [KodeFox, Inc.](https://appshunter.io/developer/1182856118) |

## 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 |


### KF Lounge

[App page](https://appshunter.io/ios/app/kf-lounge/id1558346026)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CHM Sharp free?

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

### Is KF Lounge free?

KF Lounge is free to download, with no in-app purchases.

### Do CHM Sharp or KF Lounge have ads?

CHM Sharp shows ads; KF Lounge does not.

### Which is updated more often, CHM Sharp or KF Lounge?

CHM Sharp ships an update every 4 months, and KF Lounge every 2 months. Most recently, CHM Sharp was updated on October 17, 2026 and KF Lounge on October 6, 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.*