Comparison

Cantook by Aldiko vs Open Library Reader

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

Head to head
About

Cantook by Aldiko

This app consolidates all your eBooks, comics, and audiobooks into a single platform. It offers seamless integration with public libraries, access to public domain titles, and the ability to import your own files. Customize your reading experience with various fonts, themes, and organization tools.

Highlights
  • Unified library for eBooks, comics, audiobooks
  • Public library integration
  • Import EPUB, CBZ, PDF files
  • Access public domain books
  • Customizable reading experience
  • Organize bookshelf with categories
Features
Read full description

Welcome to Cantook! The favorite reading app for the true bookworms. Bring all your eBooks, comics and audiobooks in the same place, no matter where they're coming from. Available on iPhone, iPad or macOS. With Cantook, we make it easy to bring all your books in the same place: • Built-in support for public libraries, allowing you to easily browse your library's catalog and borrow books from them • Thousands of public domain books from the Cantook Bookstore • Import your own EPUB, CBZ or PDF files • Add your own catalogs, for example using Calibre Cantook provides an extensive set of features for both casual and power users: • Customize your reading experience with multiple fonts and themes • Full support for dark mode throughout the app • Organize your bookshelf with categories and collections Our philosophy is to contribute to and leverage open standards: • Read EPUB files via a Readium Mobile based reading experience • Explore catalogs using OPDS • Full support for Readium LCP based on EPUB, PDF and audiobooks

About

Open Library Reader

Access and read millions of books from an online library. Organize your reading lists, track borrowed books, and discover related titles within a familiar reading interface. Requires an internet connection.

Highlights
  • Browse and check out millions of books
  • Track reading progress and wishlists
  • Built-in search and related title discovery
  • Shelf management and edition changes
  • Checkout tracking for borrowed books
  • Customizable reading interface
Features
Read full description

Open Library is an online library with millions of books to browse or check out. You can track the books that you're reading, want to read, etc. and read many of them right there. PLEASE NOTE: This app is an interface to the openlibrary.org web site — if you don't use that site to read books, you may have trouble figuring out what the app is for. I encourage you to familiarize yourself with the site first, and then you'll understand what the app offers. This app is one reader's effort to create the ideal portable experience for taking advantage of Open Library's amazing collection. You'll get the best experience out of this app on an iPad, but you can use it on a smaller screen (if you don't mind squinting). The moment you open the app and log in, any books you've already saved on the Open Library site are laid out on your screen. You can sort them by title, author, publication date, and date saved, see which books are available to read, and open them with a single tap. Once you've opened a book in the familiar reading interface, a tap at the top of the screen will trigger the full screen mode, removing every distraction and expanding the book pages to the limits of your screen for the perfect reading experience. Other features include: - Built-in search: find and add books to your shelves from inside the app. - Shelf management: move books between shelves, remove books, change the edition of a book. - Related title search: choose a book on your shelf and quickly find more books like it. - Checkout tracking: see at a glance how long you have left on limited-access books you've checked out. - Customization: choose which shelves you want to see and manage the size of the books and their titles. This app is essentially an alternative interface to the Open Library site — all of your data is stored there, and the books you read are hosted online, not in the app. As a result, an active internet connection is required when you are using this app. Open Library is an initiative of the Internet Archive, a 501(c)(3) non-profit, building a digital library of Internet sites and other cultural artifacts in digital form. The developer of this app has no legal or contractual relationship with Open Library or the Internet Archive, and bears no responsibility for the content found there.

Screenshots

Cantook by Aldiko4 screens
Open Library Reader1 screens

Verdict

The call

The clearest difference is rating: Cantook by Aldiko at 3.4 against Open Library Reader's 3.0. Cantook by Aldiko also leads on review sentiment (39% vs 26%). Open Library Reader's advantage is iOS requirement (13.0 vs 15.0). On price, ratings volume, 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Cantook by Aldiko holds the better App Store score, 3.4 against 3.0. Both are backed by a comparable volume of ratings — 31 and 50 respectively. Written reviews point the same way: 39% of Cantook by Aldiko's written reviews are positive against 26% of Open Library Reader's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
Cantook by Aldiko versus Open Library Reader: the parameters behind the verdict, then further details
ParameterCantook by AldikoOpen Library Reader
PriceFreeFree
Rating3.4 (31 ratings) — better3.0 (50 ratings)
Positive reviews38.6% of reviews — better26.2% of reviews
Number of ratings3150 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size26 MB24 MB
Age rating17+4+
DeveloperDe MarqueLoomis House, LLC

Customer experience

Cantook by Aldiko

All ratings31 ratings
Positive51.6%
Neutral9.7%
Negative38.7%
Written reviews88 reviews
Positive38.6%
Neutral15.9%
Negative45.5%

Open Library Reader

All ratings50 ratings
Positive44.0%
Neutral14.0%
Negative42.0%
Written reviews42 reviews
Positive26.2%
Neutral19.0%
Negative54.8%

In-app purchases

None

Cantook by Aldiko

No in-app purchases

None

Open Library Reader

No in-app purchases

Questions

Is Cantook by Aldiko free?
Cantook by Aldiko is free to download, with no in-app purchases.
Is Open Library Reader free?
Open Library Reader is free to download, with no in-app purchases.
Which has better reviews, Cantook by Aldiko or Open Library Reader?
Cantook by Aldiko is rated higher. Cantook by Aldiko averages 3.4 out of 5 from 31 ratings, while Open Library Reader averages 3.0 from 50 ratings.
Do Cantook by Aldiko or Open Library Reader have ads?
Neither Cantook by Aldiko nor Open Library Reader shows ads.
Which is updated more often, Cantook by Aldiko or Open Library Reader?
Cantook by Aldiko ships an update every 2 months, and Open Library Reader every 2 months. Most recently, Cantook by Aldiko was updated on September 21, 2026 and Open Library Reader on September 22, 2026.

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