PureLibro vs CHM Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PureLibro
This app offers a comprehensive reading experience for various digital book and comic formats. It features AI-powered image enhancement, cloud synchronization, extensive customization options, and robust privacy controls. Enjoy hands-free reading and track your progress with detailed statistics.
- Supports TXT, EPUB, MOBI, PDF, CBZ, CBR and more
- AI-powered image enhancement for comics
- iCloud sync across devices
- Hands-free auto reading mode
- Extensive customization of fonts, layout, and appearance
- Advanced privacy features with password and Face ID
- Detailed reading statistics and library management
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PureLibro is a multi-format reader for novels, comics, PDFs, local files, and remote libraries. Feature Highlights. Everything is designed for better reading. 1. Rich format support: supports popular formats including TXT, EPUB, MOBI, AZW3, AZW, CBZ, CBR, PDF, ZIP, and RAR (DRM-free files only). 2. Comic reader: supports ZIP, RAR, CBZ, and CBR comic archives. PDF, EPUB, and MOBI files can also be switched to comic mode with one tap, making it ideal for comics, art books, and image-rich content. 3. Remote library streaming reading (comic mode): supports remote libraries such as SMB, OPDS and WebDAV. On servers that support streaming access, ZIP, RAR, CBZ, CBR, and PDF files can be opened without fully downloading them first, saving local storage space. 4. AI-based image enhancement: supports Waifu2x / Anime4K to improve comic image quality (comic mode only). 5. iCloud sync: keeps reading progress and book data consistent across your devices. 6. Data backup: package your reading data with one tap and save it to cloud drives or other storage locations for extra peace of mind. 7. TXT file editing: edit TXT content directly for easier reading and organization. 8. Multiple import methods: import books via WebDAV, cloud drives, Wi-Fi transfer, iCloud, and more. 9. Auto reading: free your hands and make long reading sessions more comfortable. 10. Personalized layout: customize character spacing, paragraph layout, background images, and text colors to create your own reading style. 11. Eye-friendly reading: supports dark mode, page curl, slide, scrolling, and other reading modes, with Simplified/Traditional Chinese conversion. 12. Privacy protection: supports password, gesture, and Face ID unlock, and allows you to encrypt or hide books to protect your personal reading space. 13. Reading statistics: records reading duration, frequency, progress, and more to help you understand your reading habits. 14. Flexible book management: supports custom groups, title editing, and sorting for a clearer library. 15. Custom covers: customize covers for TXT and other books to make your bookshelf look better. 16. Automatic chapter detection: TXT novels can also be divided into chapters with one tap, improving the long-form reading experience. 17. Multiple font options: use system fonts or import custom fonts. 18. Multiple listening voices: supports system text-to-speech and Alibaba Cloud speech synthesis, with multiple voices to choose from. -- Pro benefits: After subscribing to Pro, you can use all Pro advanced features during the service period and remove all ads. -- Monthly subscription (1 month), quarterly subscription (3 months), and yearly subscription (1 year) are auto-renewable subscriptions. -- The actual product price applies. The purchase price will be charged in your local currency according to the current exchange rate defined by iTunes. Payment will be charged to your iTunes account upon confirmation of purchase. 【Monthly, Quarterly, and Yearly Auto-Renewable Subscription Services】 -- If you subscribe to the monthly, quarterly, or yearly auto-renewable service, you authorize Window Reading to charge your iTunes account (the “Account”) for the next billing cycle of the Pro service within 24 hours before the current subscription period expires. If the charge fails due to insufficient account balance, Window Reading reserves the right to suspend or terminate your Pro service without further notice. -- To cancel an active auto-renewable subscription, go to “Settings” on your iOS device → “iTunes Store & App Store” → select “Apple ID” → tap “View Apple ID” → tap “Subscriptions” on the account settings page → cancel the subscription. -- Privacy Policy: https://gitee.com/coder_to/luck/blob/master/App/Privacy.md -- Terms of Service and Auto-Renewal Terms: https://gitee.com/coder_to/luck/blob/master/App/serviceForMembers.md Icon Design Studying icons created by Freepik - Flaticon
CHM Reader
This app provides a streamlined and efficient way to read CHM and TXT documents. It offers features like smart table of contents navigation, full-text search, adjustable font sizes, and night mode for a comfortable reading experience.
- Professional CHM format support
- Smart Table of Contents navigation
- Full-text search
- Adjustable font size
- Night mode
- Bookmark collection
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CHM Reader & Viewer - Professional CHM Document Reader A streamlined and efficient CHM document reader that provides you with a smooth and comfortable reading experience. Key Features: • Professional CHM Format Support - Perfect compatibility with various CHM documents, supporting multiple encoding formats • Smart Table of Contents Navigation - One-tap jump, quick content positioning • Powerful Search Function - Full-text search, instantly find the information you need • Personalized Reading - Font size adjustment, night mode • Bookmark Collection - Save important sections, offline access Designed specifically for efficient reading, making your document browsing more convenient. How to Use: After opening the app, click "+" to add CHM files and start reading. Encoding Support: Built-in encoding format toggle button in the reader menu, supports GBK, UTF-8 and other encodings, easily solve garbled text issues. Subscription Options: • Offers weekly and annual memberships, lifetime membership • Payment will be charged to your iTunes account • Auto-renewal occurs within 24 hours before subscription expires • Manage or cancel subscriptions anytime in account settings Designed specifically for efficient reading, making your document browsing more convenient. Terms of Service: https://chmreader.xzonesoft.com/terms.html Privacy Policy: https://chmreader.xzonesoft.com/privacy.html Contact Us: support@xzonesoft.com
Screenshots
Verdict
The clearest difference is review sentiment: PureLibro at 77% against CHM Reader's 43%. PureLibro also leads on ratings volume (362 vs 2) and update cadence (every 10 days vs every 3 weeks). CHM Reader's advantage is rating (5.0 vs 4.6). On price, ads, in-app purchases and monetization model 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. PureLibro sells 6 in-app purchases, starting at $0.99 per month and CHM Reader sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
CHM Reader holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: PureLibro has 362 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 77% of PureLibro's written reviews are positive against 43% of CHM Reader's, so the app with the better star average is not the one people write more warmly about.
PureLibro ships an update every 10 days, CHM Reader every 3 weeks. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.
| Parameter | PureLibro | CHM Reader |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (362 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 76.6% of reviews — better | 42.9% of reviews |
| Number of ratings | 362 — better | 2 |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.4 — better | 16 |
| Further details — not scored | ||
| Size | 42 MB | 19 MB |
| Age rating | 17+ | 4+ |
| Developer | 添欢 谢 | 灿耿 陈 |
Customer experience
PureLibro
CHM Reader
Bugs and requests
PureLibro
Reported bugs
4 issues- Inconsistent behavior when switching between reading modes
- Issues with loading and rendering large books or comics
- Problems with the reliability of the built-in web browser
- Bugs related to the iCloud sync and backup functionality
Requested features
7 requests- Add support for more text-to-speech options
- Implement bulk import and management of books
- Introduce multi-device sync and reading progress tracking
- Expand font and theme customization capabilities
- Improve localization and translation of the app
Show 2 moreShow fewer
- Add support for OPDS and other external library sources
- Implement a more robust and user-friendly TXT file handling
CHM Reader
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PureLibro
- 1 monthly subscription$0.991 Month
- 3 monthly subscription$1.993 Months
- yearly subscription$5.991 Year
- Pro Special Offer$12.99
- Unlock Pro Version$12.99
- Unlock Pro Version$19.99
CHM Reader
- Weekly members$1.997 Days
- Annual Subscription$4.991 Year
- Lifetime Membership$6.99









