Comparison

Readest vs Koodo Reader

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

Head to head
About

Readest

This app is a powerful ebook reader designed for deep thinkers and researchers. It offers advanced annotation tools, seamless device syncing, and robust library management with OPDS and Calibre support. Enjoy a distraction-free reading experience with customizable modes and multi-book viewing for enhanced study and analysis.

Highlights
  • OPDS Online Libraries
  • Calibre Integration
  • Sync Across Devices
  • Bookshelf Management
  • Customizable Reading Modes
  • Multi-Book View
  • Advanced Annotations & Highlights
Features
Read full description

Readest is an ebook reader for people who read a lot, and who want their books, notes and reading position on whatever device is nearest. Open EPUB, PDF, MOBI, AZW3, FB2, CBZ, TXT and Markdown in one library. Pull books from OPDS catalogs or from your own Calibre server. Read, annotate, listen, translate. Made for iPhone and iPad • CarPlay, so you can keep listening on the road with playback controls on the dashboard • Download read-aloud voices per book and listen with no connection at all • Add books from Files, Mail or any share sheet, and read them in place instead of copying them into a second library • Open up to four books at once on iPad and arrange them how you like Reading • Paginated or scrolling, with custom fonts, themes, spacing and margins • Vertical text for CJK books • Contrast and refresh tuned for e-ink screens • Full-text search inside a book Your library • Browse, search and download from OPDS catalogs and public libraries • Connect to Calibre or Calibre-Web, covers and metadata included • Organize with bookshelf groups you can rename Notes • Highlights, bookmarks and structured notes • Copy a highlight together with a deep link back to the passage • Export your annotations Listening and languages • Text-to-speech with downloadable offline voices • Translate a sentence, a page, or an entire book • Wikipedia and dictionary lookup without leaving the page Sync • Readest Cloud, or bring your own: iCloud, Google Drive, OneDrive, WebDAV, S3 • KOReader sync keeps your progress in step with your e-reader • iPhone, iPad, Mac, all other platforms and the web Readest is open source. Support: support@readest.com Privacy Policy: https://readest.com/privacy-policy Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Koodo Reader

Manage and read your local e-books with a powerful reader supporting numerous formats. Seamlessly integrate with cloud storage and NAS for cross-platform access. Customize your reading experience with adjustable fonts, themes, and optimized layouts.

Highlights
  • Broad e-book format support
  • Cloud and NAS integration
  • Cross-device library sync
  • Customizable reading interface
  • AI-powered dictionary and translation
  • Night mode and multiple themes
Features
Read full description

Koodo Reader is a powerful e-book reader designed for managing and reading local e-books. It supports a wide range of popular formats, including EPUB, PDF, MOBI, AZW3, TXT, Comics and more. It integrates seamlessly with personal NAS and cloud storage for a smooth cross-platform experience.  With a fully customizable interface, you can adjust fonts, switch between multiple themes, enable night mode, and enjoy optimized layouts for any screen size. Key Features: Broad Format Support: EPUB, PDF, MOBI, AZW3, AZW, TXT, FB2, CBR, CBZ, CBT, CB7, MD, DOCX, HTML, XML, XHTML, MHTML, HTM Cloud Integration: Works with OneDrive, Google Drive, Dropbox, pCloud, Baidu Netdisk, 115 Netdisk, Aliyun Drive, Yandex Disk and Box Network Protocol Compatibility: WebDAV, Self-hosted Docker, SMB, FTP, SFTP and S3-Compatible Object Storage Sync Across Devices: Automatically keeps your library, reading progress, bookshelves, notes, and highlights up to date AI-Powered Tools: Built-in dictionary, translation, and smart summarization

Screenshots

Readest4 screens
Koodo Reader4 screens

Verdict

The call

The clearest difference is rating: Readest at 4.5 against Koodo Reader's 3.0. Readest also leads on ratings volume (178 vs 2). Koodo Reader's advantage is monetization model (free vs free with in-app purchases). On price, review sentiment, update cadence 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. Readest sells 6 in-app purchases, starting at $4.99 per month and Koodo Reader sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Readest holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Readest has 178 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 85% of Readest's written reviews are positive against 83% of Koodo Reader's.

UpkeepUpdate frequency

Readest ships an update fortnightly, Koodo Reader monthly. Both last shipped on September 22, 2026.

Scorecard3 real differences · 7 level
Readest versus Koodo Reader: the parameters behind the verdict, then further details
ParameterReadestKoodo Reader
PriceFreeFree
Rating4.5 (178 ratings) — better3.0 (2 ratings)
Positive reviews85.1% of reviews — better82.5% of reviews
Number of ratings178 — better2
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.415.5 — better
Further details — not scored
Size67 MB42 MB
Age rating4+17+
DeveloperBilingify LLC亮 郭

Customer experience

Readest

All ratings178 ratings
Positive86.0%
Neutral5.6%
Negative8.4%
Written reviews262 reviews
Positive85.1%
Neutral5.7%
Negative9.2%

Koodo Reader

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews40 reviews
Positive82.5%
Neutral5.0%
Negative12.5%

In-app purchases

6 purchases

Readest

Subscriptions2
  • Subscribe to Plus Plan$4.991 Month
  • Subscribe to Pro Plan$9.991 Month
One-time4
  • 1 GB$9.99
  • 2 GB$14.99
  • 5 GB$29.99
Show 1 more
  • 10 GB$49.99
2 purchases

Koodo Reader

One-time2
  • 5 million Character Quota$4.99
  • Koodo Reader Pro (1 Year)$5.99

Questions

Is Readest free?
Readest is free to download, with in-app purchases available.
Is Koodo Reader free?
Koodo Reader is free to download, with in-app purchases available.
Which has better reviews, Readest or Koodo Reader?
Readest is rated higher. Readest averages 4.5 out of 5 from 178 ratings, while Koodo Reader averages 3.0 from 2 ratings.
Do Readest or Koodo Reader have ads?
Neither Readest nor Koodo Reader shows ads.
Which is updated more often, Readest or Koodo Reader?
Readest ships an update fortnightly, and Koodo Reader monthly. Most recently, Readest was updated on September 22, 2026 and Koodo Reader on September 22, 2026.

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