Comparison

Interchange vs Scroll Books

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Scroll Books

Features
Read full description

Read books in your library, one scroll at a time. Scroll Books breaks books into short reading sessions so you can build a lasting reading habit, even on your busiest days. Pick up a novel over morning coffee, dive into a thriller on your commute, or unwind with a classic before bed. Explore a curated catalogue spanning classics, fiction, and more. Every book is split into bite sized chunks designed to fit into your day. Stay motivated with streaks that track your reading consistency. Read every day and watch your streak grow. Save your streak with a Bookmark. Miss a day? Pick back up and start building again. Earn achievements as you read, from your first chapter to your longest streak. Collect badges that celebrate your reading journey and show how far you've come. Found a line that resonates? Save it. Build a personal collection of your favourite quotes and passages from every book you read. Generate beautiful, shareable cards showing your reading streaks, profile stats, and favourite passages. Perfect for BookTok, Bookstagram, or sharing with friends. Choose how you read! Either swipe through pages horizontally, scroll vertically, and preview chapters before diving in. Customise the reading experience to suit you. Scroll Books is designed for readers who love great books but struggle to find the time. Whether you're discovering something new or revisiting a favourite, we make it easy to read a little every day. Start reading today, it only takes a few minutes.

Screenshots

Interchange4 screens
Scroll Books4 screens

Verdict

The call

The clearest difference is in-app purchases: Scroll Books at none against Interchange's 10. Interchange's advantage is update cadence (every 6 days vs every 3 weeks). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interchange sells 9 in-app purchases, starting at $2.49 per month. Scroll Books asks for nothing beyond the download.

UpkeepUpdate frequency

Interchange ships an update every 6 days, Scroll Books every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
Interchange versus Scroll Books: the parameters behind the verdict, then further details
ParameterInterchangeScroll Books
PriceFreeFree
Rating4.3 (212 ratings) — better—
Positive reviews73.2% of reviews—
Number of ratings212 — better—
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.2 — better13.0
Further details — not scored
Size103 MB31 MB
Age rating17+4+
Developer小龙 刘Jessica Mumby

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
Show 6 more
  • 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
Show 3 more
  • Ability to send files to Kindle over WiFi
  • Bookmark synchronization across devices
  • Better ad implementation with working close buttons

Scroll Books

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Interchange

Subscriptions2
  • UNLOCK ALL FEATURES, REMOVE AD$2.491 Month
  • UNLOCK ALL FEATURES, REMOVE AD$4.991 Year
One-time7
  • REMOVE ALL ADS$1.99
  • Conversions+50$1.99
  • All formats2 variants$1.99
Show 4 more
  • Conversions+600$2.99
  • Conversions+1000$3.99
  • ALL ACCESS, REMOVING AD$9.99
  • All advanced features$9.99
None

Scroll Books

No in-app purchases

Questions

Is Interchange free?
Interchange is free to download, with in-app purchases available.
Is Scroll Books free?
Scroll Books is free to download, with no in-app purchases.
Do Interchange or Scroll Books have ads?
Neither Interchange nor Scroll Books shows ads.
Which is updated more often, Interchange or Scroll Books?
Interchange ships an update every 6 days, and Scroll Books every 3 weeks. Most recently, Interchange was updated on October 29, 2026 and Scroll Books on October 24, 2026.

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