Comparison

Comic Book Viewer vs Interchange

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

Head to head
About

Comic Book Viewer

A fast and user-friendly application for viewing digital comic books and PDF files. It supports various comic archive formats and common image types, offering library management and metadata display.

Highlights
  • Supports CBT, CBZ, CBR, CB7, and PDF formats
  • Recognizes PNG, JPG, GIF, TIFF, BMP, and WebP images
  • Import/export comics via iTunes or third-party apps
  • AirDrop support for sharing between devices
  • Displays metadata (CoMet, ACBF, Comic Rack, ComicBookInfo)
  • Library search functionality
Features
Read full description

Comic Book Viewer is a lightweight, fast and easy to use reader for your favorite comic books in cbt, cbz, cbr, cb7 or pdf format. Recognized image formats include png, jpg, gif, tiff, bmp and webp. Import and export your comics via iTunes or simply by sharing them in any third-party app on your device. Send them to other devices via AirDrop. Comic Book Viewer supports and shows metadata in CoMet, Advanced Comic Book Format, Comic Rack or in ComicBookInfo format and allows you to search your library. Comics seen in screenshots © 2014-2025 by Ctrl+Alt+Del Productions. Courtesy of Tim Buckley, http://www.cad-comic.com. Comics not included.

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

Screenshots

Comic Book Viewer2 screens
Interchange4 screens

Verdict

The call

The clearest difference is in-app purchases: Comic Book Viewer at none against Interchange's 10. Interchange's advantage is rating (4.3 vs 3.8) and update cadence (every 6 days vs every 3 months). On price, review sentiment, ratings volume and ads 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. Comic Book Viewer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Interchange holds the better App Store score, 4.3 against 3.8. Both are backed by a comparable volume of ratings — 135 and 212 respectively. Written reviews point the same way: 71% of Comic Book Viewer's written reviews are positive against 73% of Interchange's.

UpkeepUpdate frequency

Comic Book Viewer ships an update every 3 months, Interchange every 6 days. Both last shipped on October 26, 2026.

Scorecard5 real differences · 5 level
Comic Book Viewer versus Interchange: the parameters behind the verdict, then further details
ParameterComic Book ViewerInterchange
PriceFreeFree
Rating3.8 (135 ratings)4.3 (212 ratings) — better
Positive reviews71.0% of reviews73.2% of reviews — better
Number of ratings135212 — better
Update frequencyEvery 3 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.2 — better
Further details — not scored
Size8 MB103 MB
Age rating4+17+
DeveloperSebastian Boettcher小龙 刘

Customer experience

Comic Book Viewer

All ratings135 ratings
Positive70.4%
Neutral8.9%
Negative20.7%
Written reviews217 reviews
Positive71.0%
Neutral12.0%
Negative17.1%

Interchange

All ratings212 ratings
Positive83.0%
Neutral2.4%
Negative14.6%
Written reviews112 reviews
Positive73.2%
Neutral3.6%
Negative23.2%

User reviews

Comic Book Viewer

From 135 App Store ratings

What we love

  • 👍 Simple and easy to use
  • 🚀 Fast and responsive
  • 🔒 No ads or data collection
  • 🔒 Lightweight and efficient

Room to improve

  • 🐛 Occasional bugs and crashes
  • 🔍 Lack of advanced organization and management features
  • 🔍 Limited customization options
  • 🔍 Issues with page scrolling and zooming

Interchange

From 212 App Store ratings

What 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

Bugs and requests

Comic Book Viewer

Reported bugs

3 issues
  • Slider not working after recent update
  • Pages randomly skipping ahead when switching orientation
  • Inability to import some comic file formats

Requested features

4 requests
  • Add ability to rename/reorder comics
  • Implement vertical scrolling mode
  • Provide more customization settings
  • Improve library management with folders/collections

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

In-app purchases

None

Comic Book Viewer

No 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

Questions

Is Comic Book Viewer free?
Comic Book Viewer is free to download, with no in-app purchases.
Is Interchange free?
Interchange is free to download, with in-app purchases available.
Which has better reviews, Comic Book Viewer or Interchange?
Interchange is rated higher. Comic Book Viewer averages 3.8 out of 5 from 135 ratings, while Interchange averages 4.3 from 212 ratings.
Do Comic Book Viewer or Interchange have ads?
Neither Comic Book Viewer nor Interchange shows ads.
Which is updated more often, Comic Book Viewer or Interchange?
Comic Book Viewer ships an update every 3 months, and Interchange every 6 days. Most recently, Comic Book Viewer was updated on October 26, 2026 and Interchange on October 26, 2026.

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