Comparison

BookBub 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

BookBub

Discover daily deals on bestselling and free ebooks across all genres. Track your wishlist and receive price alerts for your favorite titles, ensuring you never miss a sale on books you want to read.

Highlights
  • Daily ebook deals
  • Hundreds of free ebooks
  • Personalized recommendations
  • Wishlist tracking
  • Price alerts
  • Genre and price filtering
Features
Currently charting
Read full description

Discover amazing deals on bestselling ebooks, plus hundreds of free ebooks. Track your wishlist and get alerts when your most wanted titles go on sale. BookBub helps millions of readers save money on ebooks they'll love. Our expert editors hand pick incredible ebook deals every day across all major genres — romance, mystery, thrillers, women's fiction, fantasy, contemporary fiction, nonfiction, and many more — from bestselling authors to hidden gems. WHY READERS LOVE BOOKBUB: THE BIGGEST EBOOKS, UP TO 95% OFF We feature limited-time ebook deals from all major retailers. Get huge savings on the biggest books and authors, including #1 New York Times bestsellers. HUNDREDS OF FREE EBOOKS Unlock a vast selection of free ebooks across 40+ genres, with new titles added each day YOUR PERSONAL BOOK TRACKER Build your reading wishlist and never miss a sale. Add any book you want to read, and we'll notify you when it's discounted. Track your TBR (to-be-read) list, sort by release date or author, and mark it as read when you're done. PERSONALIZED TO YOUR READING TASTE Our editorial team hand picks from thousands of ebooks to bring you only the best — from BookTok favorites to award-winning fiction. FEATURES: - Browse daily ebook deals personalized to your reading preferences - Track unlimited books on your wishlist - Get price alerts for specific titles or favorite authors - Discover popular titles to add to your list - Filter deals by genre and price - Buy from your favorite ebook store "When we say 'deal,' we mean it — many of BookBub's titles are free entirely, $0.99, or just a couple of bucks." — Lifehacker "Bargain-basement deals on ebooks." — The New York Times Join millions of happy readers saving money on ebooks every day. Questions? Visit bookbub.com/apphelp

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

BookBub4 screens
Open Library Reader1 screens

Verdict

The call

The clearest difference is rating: BookBub at 4.7 against Open Library Reader's 3.0. BookBub also leads on review sentiment (54% vs 26%) and ratings volume (960 vs 50). Open Library Reader's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and monetization model 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

BookBub holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: BookBub has 960 ratings behind it against 50, so its average is the more settled of the two. Written reviews point the same way: 54% of BookBub's written reviews are positive against 26% of Open Library Reader's.

UpkeepUpdate frequency

BookBub ships an update every 3 weeks, Open Library Reader every 2 months. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

Scorecard7 real differences · 4 level
BookBub versus Open Library Reader: the parameters behind the verdict, then further details
ParameterBookBubOpen Library Reader
PriceFreeFree
Rating4.7 (960 ratings) — better3.0 (50 ratings)
Positive reviews54.4% of reviews — better26.2% of reviews
Number of ratings960 — better50
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#72 — better—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.013.0 — better
Further details — not scored
Size4 MB24 MB
Age rating17+4+
DeveloperPubmark Inc.Loomis House, LLC

Customer experience

BookBub

All ratings960 ratings
Positive96.8%
Neutral1.5%
Negative1.8%
Written reviews180 reviews
Positive54.4%
Neutral8.9%
Negative36.7%

Open Library Reader

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

Bugs and requests

BookBub

Reported bugs

3 issues
  • App crashes or freezes during use
  • Sign-up and login issues
  • Incompatibility with certain devices or operating systems

Requested features

4 requests
  • Add support for Kindle and other ebook platforms
  • Implement search and filtering options
  • Allow users to manage their reading lists and leave reviews
  • Improve email subscription management

Open Library Reader

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

BookBub

No in-app purchases

None

Open Library Reader

No in-app purchases

Questions

Is BookBub free?
BookBub 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, BookBub or Open Library Reader?
BookBub is rated higher. BookBub averages 4.7 out of 5 from 960 ratings, while Open Library Reader averages 3.0 from 50 ratings.
Do BookBub or Open Library Reader have ads?
Neither BookBub nor Open Library Reader shows ads.
Which is updated more often, BookBub or Open Library Reader?
BookBub ships an update every 3 weeks, and Open Library Reader every 2 months. Most recently, BookBub was updated on October 10, 2026 and Open Library Reader on October 8, 2026.

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