Interchange vs PureLibro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interchange
Convert and read a wide variety of ebook formats, including DRM-protected files. Offers extensive customization for reading, note-taking, and book management. Supports multiple import methods and file decompression.
- Multiple ebook format conversion
- DRM removal for Kindle books
- Customizable ebook reader layout
- Note-taking and bookmarking
- Customizable book covers
- Multiple page-turning methods
- Comic reading support
- Advanced book management
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Functional Features 1. Supports multiple format conversions: txt, epub, mobi, azw, azw3, prc, pdf, markdown, docx, htmlz, fb2, etc. For txt files, automatically extract chapter directories. 2. Support removing DRM protected book files (Kindle DRM). 3. A comprehensive e-book reader that supports multiple formats: txt epub、mobi、azw、azw3、prc、pdf。 Powerful custom layout layout, including line spacing, paragraph spacing, first line indentation, top and bottom spacing, left and right spacing, custom background, custom font, global progress drag, and global search. Rich note taking and bookmarking functions. 4. Support custom book covers, online search, and album selection, even txt can have beautiful covers. Simultaneously editable, cropped, and filtered. 5. Provide multiple page turning methods, including overlay, translation, simulation, scrolling, automatic scrolling reading, landscape reading, and dual column reading. 6. Supports comic reading, with maximum screen ratio and maximum clarity for reading comics. Support scrolling mode for reading comics. 7. Powerful book management function, supporting grouping, renaming, sorting, dragging and merging groups, batch deletion, and moving operations. 8. Support modifying book element data such as title, author, ASIN, ISBN, time, publisher, etc. 9. Multiple file transfer methods, importing book files through WiFi, computer, Baidu cloud storage, local devices, and other application sharing methods for convenience and ease. 10. Quickly decompress compressed files such as zip, rar, 7z, etc. 11. Password protection function, can set gesture password, facial recognition unlock. 12. There are more features waiting for you to explore. [Automatic Subscription Instructions] --Subscription period: 1 month --Price: ¥ 18 --Subscription auto renewal, unless auto renewal is closed at least 24 hours before the end of the current term. --Payment will be charged to iTunes account upon confirmation of purchase --The account will receive renewal fees within 24 hours before the end of the current period, and the renewal fees will be determined --Subscription can be managed by users themselves, and automatic subscription can be disabled by entering their personal account on the App Store after purchase --If any unused portion of the free trial period is provided, it will be forfeited upon the user's purchase of the publication's subscription (if applicable) --Subscription period: 1 year --Price: ¥ 30 --Subscription auto renewal, unless auto renewal is closed at least 24 hours before the end of the current term --Payment will be charged to iTunes account upon confirmation of purchase --The account will receive renewal fees within 24 hours before the end of the current period, and the renewal fees will be determined --Subscription can be managed by users themselves, and automatic subscription can be disabled by entering their personal account on the App Store after purchase --If any unused portion of the free trial period is provided, it will be forfeited upon the user's purchase of the publication's subscription (if applicable) --Service Terms: http://blog.sina.com.cn/s/blog_a02518890102xuoh.html --Privacy Policy: http://blog.sina.com.cn/s/blog_a02518890102xtq4.html
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
Screenshots
Verdict
The clearest difference is monetization model: PureLibro at free with in-app purchases against Interchange's subscription. PureLibro also leads on rating (4.6 vs 4.3). Interchange's advantage is iOS requirement (12.2 vs 15.4). On price, review sentiment, ratings volume and update cadence 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. Interchange sells 9 in-app purchases, starting at $2.49 per month and PureLibro sells 6 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
PureLibro holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 212 and 362 respectively. Written reviews point the same way: 73% of Interchange's written reviews are positive against 77% of PureLibro's.
Interchange ships an update every 6 days, PureLibro every 10 days. The most recent releases landed on September 25, 2026 and September 26, 2026 respectively.
| Parameter | Interchange | PureLibro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (212 ratings) | 4.6 (362 ratings) — better |
| Positive reviews | 73.2% of reviews | 76.9% of reviews — better |
| Number of ratings | 212 | 362 — better |
| Update frequency | Every 6 days — better | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.2 — better | 15.4 |
| Further details — not scored | ||
| Size | 103 MB | 42 MB |
| Age rating | 17+ | 17+ |
| Developer | 小龙 刘 | 添欢 谢 |
Customer experience
Interchange
PureLibro
User reviews
Interchange
From 212 App Store ratingsWhat we love
- 🚀 Fast and quick conversion speeds
- 👍 Easy to use interface
- 📁 Supports multiple file formats
- 💰 Free version available
- 📧 Can send files to Kindle
Room to improve
- 🐛 Frequent app crashes and crashes on cover changes
- 😤 Intrusive and excessive advertising
- ❌ Poor conversion quality for PDFs
- 🔤 Confusing and non-intuitive UI
- 🌐 Inconsistent English localization
PureLibro
From 362 App Store ratingsWhat we love
- 🚀 Excellent rendering and image quality
- 👍 Clean and intuitive user interface
- 🔒 Supports a variety of file formats
- 💡 Customizable reading experience
- 🚀 Fast and responsive app
Room to improve
- 🐛 Some issues with text formatting and italics
- 💡 Lack of multi-device sync and progress tracking
- 🐛 Occasional crashes or performance issues
- 💡 Limited font and theme customization options
- 🐛 Localization problems with menus and settings
Bugs and requests
Interchange
Reported bugs
11 issues- App crashes when changing covers
- Ad close buttons are too small or non-functional
- Converted files show as 0 bytes
- App crashes when deleting empty files
- Pro version features still require upgrade prompts
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- Converted PDFs have missing images and jumbled text
- Files vanish after sending to Kindle
- Conversion fails despite payment
- App shows ads instead of converting files
- Cover metadata not preserved in conversions
- Right-to-left text displays incorrectly
Requested features
8 requests- Batch conversion capability
- Right-to-left text support for Arabic books
- Proper cover image inclusion in conversions
- Unlimited conversions
- iPad Pro landscape orientation support
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- Ability to send files to Kindle over WiFi
- Bookmark synchronization across devices
- Better ad implementation with working close buttons
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
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- Add support for OPDS and other external library sources
- Implement a more robust and user-friendly TXT file handling
In-app purchases
Interchange
- UNLOCK ALL FEATURES, REMOVE AD$2.491 Month
- UNLOCK ALL FEATURES, REMOVE AD$4.991 Year
- REMOVE ALL ADS$1.99
- Conversions+50$1.99
- All formats2 variants$1.99
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- Conversions+600$2.99
- Conversions+1000$3.99
- ALL ACCESS, REMOVING AD$9.99
- All advanced features$9.99
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









