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CLZ Books Mobile

Try CLZ Books Mobile for free

Easily catalog books
on your phone or tablet

Automatic cover art and book details

Author, title, publisher, publication date, plot, genres, subjects, etc...

Easily add books by ISBN barcode or title

Scan barcodes with built-in camera scanner or search by author and title.

Customize entries with personal details

Location, owner, purchase price/store/date, notes, your rating, etc...

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CLZ Books Mobile features

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TWO EASY WAYS TO ADD BOOKS:
  1. scan ISBN barcodes with the built-in camera scanner. Guaranteed 98% success rate.
  2. search by author and title.

Our CLZ Core online book database automatically provides cover images and full book details, like author, title, publisher, publication date, plot, genres, subjects, etc..

EDIT ALL FIELDS:

You can even edit the automatically provided details from Core, like Authors, Titles, Publishers, Publications Dates, Plot descriptions, etc.. you can even upload your own cover art (front and back!). Also, add personal details like condition, location, purchase date / price / store, notes, etc..

CREATE MULTIPLE COLLECTIONS:

Collections will appear as Excel-like tabs at the bottom of your screen. E.g. for different people, to separate your physical books from your ebooks, to keep track of books you sold or have for sale, etc...

FULLY CUSTOMIZABLE:

Browse your book catalog as a list with small thumbnails or as cards with big images. Sort any way you want, e.g. by author, title, publication date, date added etc.. Group your books into folders by author, publisher, genre, subject, location, etc...

USE CLZ CLOUD TO:
  • Always have an online backup of your book organizer database.
  • Sync your book library between multiple devices
  • View and share your book collection online
CLZ Books
Mobile + Web
CLZ Books Mobile
1 year
+
CLZ Books Web
1 year
USD $0.00
USD $0.00
save USD $0.00
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Or... use them both,
as perfect companions!

Both CLZ Books Mobile and CLZ Books Web can be used on their own, as a stand-alone solution. But these tools really come to life when used together, as they are great companions. While away from your computer use CLZ Books Mobile on your phone, then use CLZ Books Web at home, to work on your database on a big screen, with a real keyboard. Of course, you can sync your database between them through our CLZ Cloud solution.

Learn about CLZ Books Web
Starters Manual Let's get you started!
CLZ News Learn what's new
Club CLZ Join our support forum
CLZ Help Center Contact our support team

CLZ Books Mobile Updates

icon v10.7: Faster down-syncing from CLZ Cloud Apr 01, 2026 icon v10.6: Track your Reading History, plus other new data fields Feb 24, 2026 icon v10.5 iOS: Disable book values / Search by ISBN10 Jan 07, 2026 icon v10.5 Android: Smoother navigation / Disable book values / Search by ISBN10 Jan 06, 2026 icon v10.4: “One-by-One” mode for adding books by ISBN Nov 14, 2025
More updates
Mar 24, 2026
Best app for book collectors
I’ve used the CLZ Books app for over 5 years. Before this, my books were everywhere and I had a hard time finding them. I had a system using photos in my phone, but it was not very effective. CLZ allowed me to categorised the books by location, and was easy to upload using ISIN barcodes that could be scanned. Each time a book got identified, it included a wealth of information about the book and publication. Anyone who has over 100 books in their possession ought to use this app. Best thing is: they keep improving their offering.
Mmmjjj145 (USA) on CLZ Books Mobile

CLZ Books reviews from customers

Mar 29, 2026
Best user friendly database for books
I have been using this app for many years and have not been disappointed. This app is constantly upgrading to make it easier to use with less work on my part and It is reasonably priced. I highly recommend this app.
maine fanclub (USA) on CLZ Books Mobile
Mar 26, 2026
The Library Organizer
I’ve been using this handy app for many years to keep track of my books that I’ve read and want to read. It has prevented me from buying a book that I’ve already read or have on my bookshelf (either a physical book or on my Kindle).
The developers are responsive to problems and suggestions for improvement. Bottom line: an invaluable resource for library management.
Daniel always Reading (USA)
Mar 25, 2026
Excellent app has made cataloguing a 2500 book library a breeze.
on CLZ Books Mobile
Mar 24, 2026
This app is very easy to use. Love it!
I use mainly to record titles I have read and those I wish to read or avoid. it includes basic bibliographical information as well as the option to add extras and notes. I wouldn't be without it.
Mary Ross on CLZ Books Mobile
Mar 24, 2026
App very helpful when buying books
This app has saved a fortune by allowing me to check whether I have already bought it already.
Bracknell (United Kingdom) on CLZ Books Mobile
Mar 24, 2026
Keep track of all your books
I love this app. I use the comic collecting version as well. It keeps all your books in one place and is highly customisable. For instance I have a custom field which helps me keep track of what I’ve read, notes for what I thought about it and it just works flawlessly.
A great app for any bookworms out there!
AndyY1508 (United Kingdom) on CLZ Books Mobile
Mar 24, 2026
Excellente application
Excellente application, pour 1€/mois, sans publicité, vraiment bien conçue. Ajout des livres (code- barres). Permet d’enregistrer facilement chaque livre (titre, auteur...) et d’organiser sa bibliothèque de façon claire et efficace. La prise en main demande un léger temps d’adaptation, mais l’utilisation devient ensuite très fluide. Utile quand on possède beaucoup d’ouvrages : on évite les doublons, on sait immédiatement ce que l’on a, et l'on choisit plus facilement sa prochaine lecture.
Michel BLAISE on CLZ Books Mobile
Mar 24, 2026
Absolutely love this whole app
I absolutely love this app and every other part that goes along with it. The price is amazing and the customer service is second to none. Never any problem whatsoever and it’s a pity I can only leave 5 stars because I would leave more if possible. A literal life changer if you are a book lover like me who likes to be super organised.
Maryann Conway (United Kingdom) on CLZ Books Mobile
Mar 24, 2026
Highly recommend it
couldn't live without it! it helps me keep track of all my books, which helps so I dont buy duplicates. it also picks random books if you shake it, which helps with my indecision. I especially love all the stats it gives you. I love that I can put my reviews and stars in it, too, not just on goodreads. I have had this for years now, and it's worth every penny.
The Sunshine Breakthrough on CLZ Books Mobile
Mar 24, 2026
Best app for book collectors
I’ve used the CLZ Books app for over 5 years. Before this, my books were everywhere and I had a hard time finding them. I had a system using photos in my phone, but it was not very effective. CLZ allowed me to categorised the books by location, and was easy to upload using ISIN barcodes that could be scanned. Each time a book got identified, it included a wealth of information about the book and publication. Anyone who has over 100 books in their possession ought to use this app. Best thing is: they keep improving their offering.
Mmmjjj145 (USA) on CLZ Books Mobile
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