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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...

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

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
Jan 15, 2026
THE go-to app for comic collectors
As a comic book collector for over 40 years, I’ve always struggled to find a convenient way to catalog my books. As 12 year old in 1980, it started with pen and paper. Then eventually progressed to spreadsheets, and so on, becoming a little better with each new technological advancement.
I have to say honestly, this is the app I’ve needed my entire life. I highly recommend CLZ for its intuitive interface, ease of use and strong features that are constantly being improved upon.
Do yourself a favor, and give this app a try. You won’t be disappointed.
brianlog (USA) on CLZ Comics Mobile

CLZ Books reviews from customers

Jan 17, 2026
Onmisbaar
Al vele jaren gebruik ik bijna dagelijks deze app als mijn boekenkast in mijn binnenzak. Als enthousiaste lezer en als lees ambassadeur is dit een handige en onmisbare app. Van harte aanbevolen. Ook de support is snel en persoonlijk mocht er onverhoopt iets misgaan. Veel leesplezier gewenst.
vanderlugt (Netherlands) on CLZ Books Mobile
Jan 16, 2026
Excellent and usable app
I got convince by a Martha Stewart review a long time ago, and this has been extremely useful. The step to making it even more useful is to take the physical books and sort them by the Library of Congress number which is in the database.
Ccwnj (USA) on CLZ Books Mobile
Jan 16, 2026
Best app for large libraries
My husband and I are both voracious readers and have over 2000 books (including childrens books) we moved about 5 years ago and never really ‘organized them’ well. With this app we dont have to be organized! I can just click the bookshelf and which row the shelf is and now I can find my book so easily! Best app ever! Easy to scan them and set up shelves. Easy to search by title and author.
CurlyMitch (USA) on CLZ Books Mobile
Jan 16, 2026
The best app I have ever used
The best app I have ever used to catalogue my book collection, I have been a user since the start, and with the active development team new features and performance enhancements are regular posted. I would recommend this app and their other apps to anybody.
Christopher Headford on CLZ Books Mobile
Jan 16, 2026
Worth the cost!
I don’t usually do app reviews but I’m compelled to do one for CLZ Books given my experience over the past year and specifically within the past couple days. I’ve been using CLZ Books for a few years now, to varying degrees, but I have really started to put it through some hoops in the past year as I’ve finally begun to organize and catalogue my book collection, now approaching 2250 titles.
I first got it to replace another library app that went defunct, to help me avoid my common mistake of buying a book I already had, but I was quickly a fan of how easy it was to add books to my collection and to make notes for each entry. And with every update, improvements were made that made organizing my library a little bit easier.
There is a lot of data available for almost any book you might have, and adding books not in their database is pretty easy.
The best part of CLZ Books is the responsiveness of their customer support. The other day I had to reinstall CLZ Books on a new phone, and after I’d synced my library to the cloud, the app kept crashing. I was despondent because organizing my library has been a big part of my daily life for months, and the thought of not being able to use the app as a resource was rough.
I looked through the online CLZ community for any hint as to what was going on, and I fired off an email to CLZ support describing my situation. Within hours, I received a reply that a bug had been detected in a recent update and that they’d just pushed through a new update to resolve the issue. Sure enough, once I downloaded and installed the new update, it worked perfectly and I can now continue to organize my library.
Is it perfect? No, there are some sorting and search issues that can be improved upon, but I’m relatively confident that CLZ support will be responsive to comments and questions on the various forums and emails and get us to as close to perfect as we can expect.
Ewok99 (USA) on CLZ Books Mobile
Jan 14, 2026
Simply The Best
To paraphrase the iconic Ms. Tina Turner, the CLZ Books app — whether it's on my phone or computer — is SIMPLY THE BEST — PERIOD.
Bob Sternberg (USA) on CLZ Books Mobile
Jan 13, 2026
Helpful!
Helpful to keep track of books you own and books you want to get. Several options for organizing how you want. Recommend this and the other CLZ apps!
riders4ever (Canada) on CLZ Books Mobile
Jan 7, 2026
One of my favorite apps
I’ve been using this product since before it was an app, and bought a bar code scanner for my PC. It’s just gotten better and better over the years. I own almost 5000 books, e-books and audio books, and I can check my inventory at any time from my devices, PC, or a browser.
Recently I decided to sell some of my business books, (I’ve retired), and the new pricing feature has been a huge help to determine which to keep, donate or sell. I also track books I loan, which ones I’ve read, where I got them, and where I put them (I have a lot of bookcases.)
In general I’m not an app fan, but this is the exception to that rule. The team are super friendly, send me quick personal emails when I have questions, have implemented suggestions, and continue to innovate. I couldn’t be happier with it.
Donohkat (USA) on CLZ Books Mobile
Jan 7, 2026
Das perfekte Programm
Für mich das perfekte Programm zum Verwalten meiner Sammlung, da wird das Katalogisieren der Bücher schon fast zu einem eigenen Hobby :)
Andreas Walter on CLZ Books Mobile
Jan 7, 2026
So useful!
This app provides a great way to catalog your library. Intuitive and easy to use, and constantly being improved by the developers. Love it!!!
Ae100000 (USA) on CLZ Books Mobile