CHM Sharp vs YDReader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CHM Sharp
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.
- 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
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CHM Sharp is CHM (Microsoft Compiled HTML Help) document / ebook reader for iPad, iPhone and iPod touch. * Sorting by file name、create time and file size * Search file(folder) name * View, copy, move, delete, rename, email, zip Compression and unzip files/folders * Extract chm files from compressed .zip/.rar file * Glide deleting function * Transferring files by wifi and itunes file sharing * Email multiple files, folder Supported * catalog view/search、index view/search * full-text、title search, Highlight show * auto detect Text encoding * support bookmarks * Supports pinch to zoom * select all and cancel all * open files from other app * Support all orientations * Universal app
YDReader
Read TXT, Epub, MOBi, and AZW3 files with extensive customization options for fonts, colors, and spacing. This app also supports decompression of ZIP, RAR, and 7Z archives, and compression into ZIP and 7z formats.
- Ebook reading (TXT, Epub, MOBi, AZW3)
- Customizable reading experience
- File decompression (ZIP, RAR, 7Z)
- File compression (ZIP, 7Z)
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1, TXT, Epub, MOBi, AZW3 reader, can be customized font, color, paragraph spacing, etc. 2, support ZIP, RAR, 7Z decompression, ZIP, 7z compression.
Screenshots
Verdict
The clearest difference is rating: YDReader at 4.6 against CHM Sharp's 3.8. YDReader also leads on ads (none vs shown) and update cadence (fortnightly vs every 4 months). On price, in-app purchases, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. CHM Sharp sells 1 one-off in-app purchase and YDReader sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
YDReader holds the better App Store score, 4.6 against 3.8. Both are backed by a comparable volume of ratings — 11 and 49 respectively. Written reviews point the same way: 68% of CHM Sharp's written reviews are positive against 87% of YDReader's.
CHM Sharp ships an update every 4 months, YDReader fortnightly. The most recent releases landed on September 9, 2026 and September 8, 2026 respectively.
| Parameter | CHM Sharp | YDReader |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (11 ratings) | 4.6 (49 ratings) — better |
| Positive reviews | 68.0% of reviews | 87.0% of reviews — better |
| Number of ratings | 11 | 49 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.1 — better |
| Further details — not scored | ||
| Size | 25 MB | 37 MB |
| Age rating | 4+ | 17+ |
| Developer | 锦文 游 | 福中 王 |
Customer experience
CHM Sharp
YDReader
In-app purchases
CHM Sharp
- Full Version$0.99
YDReader
- 1元购买100金币$0.99
- 18元购买9999金币$2.99
