Like Magic!
All you have to do is take a picture of your bookshelf and it catalogs all your books!
Free
In-App Purchases
About
Digitally catalog your physical book collection by simply photographing your shelves. The app automatically identifies titles, authors, and covers, then organizes your library with smart sorting and insightful analytics. Never forget if you own a book or who borrowed it again.
✓Scan entire bookshelves with one photo
✓Automatic book identification (title, author, cover)
✓Visual library display with spine width and color
✓Smart sorting by author, genre, or color
✓Track lent books and borrower information
✓Personalized reading recommendations based on owned books
✓AI-powered book concierge for recommendations and discussions
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What's New in Stacks
1.5
September 5, 2026
What's new in this update: • A weekly note from your Librarian (Pro) — every week, a short note on what to start next from your own shelves, with the reasons. Turn on the Sunday nudge in Settings. • Picks chosen for your shelves (Pro) — the Librarian's picks are now tuned to what you own, what you've loved, and your Want list, refreshed every week. • Share a Shelfie — turn your library into a story card: your shelves as a rainbow, your reading fingerprint, most-shelved authors, and this year so far. One card is free; Pro unlocks the set. • Try the Librarian free — ask three questions about your library before deciding on Pro. Every book now opens with a line in its own voice. • See what your Librarian remembers about you, and delete anything, from the Librarian screen. • Fixes: the taste panel now works for large libraries, the paywall's legal links, and the daily library card shows in every view.
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Subscriptions & In-App Purchases
Pro Monthly
Unlimited AI concierge + 50 shelf scans monthly
$4.991 Month
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FAQ
How does Stacks catalog books?
Stacks uses AI to photograph entire bookshelves and automatically identify books by their titles, authors, and covers. It then populates your digital library with this information, including real cover art and page counts.
Can Stacks identify books with unreadable spines?
Yes, Stacks is designed to be honest. If a spine is unreadable, it will be flagged with its position on the shelf rather than being guessed, ensuring accuracy in your catalog.
What are the benefits of Stacks Pro?
Stacks Pro unlocks the AI Reading Concierge, offering personalized 'what to read next' and gifting suggestions based on your actual library. It also provides 50 scans per month.
How much does Stacks Pro cost?
Stacks Pro is available for $4.99 per month or $34.99 per year. The yearly subscription includes a 7-day free trial.
Does Stacks have ads?
No, Stacks does not contain advertisements. The app is free to use with optional in-app purchases for premium features.
What devices does Stacks support?
Stacks is available for iPhone and iPad, allowing you to manage your library across Apple devices.
How often is Stacks updated?
The latest version of Stacks is 1.3, and it was last updated on June 24, 2026. Updates typically bring new features and improvements to the app.
Is my library data private with Stacks?
Yes, your library is backed up privately and automatically without requiring an account or sign-up, ensuring your data remains secure.
