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

TWO EASY WAYS TO ADD BOOKS:

scan ISBN barcodes with the built-in camera scanner. Guaranteed 98% success rate.
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

USD $0.00

save USD $0.00

Subscribe now

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

v10.6: Track your Reading History, plus other new data fields Feb 24, 2026

v10.5 iOS: Disable book values / Search by ISBN10 Jan 07, 2026

v10.5 Android: Smoother navigation / Disable book values / Search by ISBN10 Jan 06, 2026

v10.4: “One-by-One” mode for adding books by ISBN Nov 14, 2025

v10.3: Automatic eBay search links Oct 24, 2025

More updates

Feb 20, 2026

So slick and versatile

This is a magnificent software suite which I have huge faith in, to allow me to keep tabs on my various music collection (classical, pop, humour). It is so slick and versatile and widely adaptable. The Team are so on the ball and forever refining the software. I am most appreciative of their skills.

HDavid Lane (United Kingdom) on CLZ Music Mobile

CLZ Books reviews from customers

Feb 22, 2026

Great App

I really love this app to keep track of all my books. You can have different collections and I am also able to keep track of my son’s books also, while they are still separate from my collection. I’ve had this app for a year and ran into an issue where somehow I had 2 accounts. I reached out to support and they were so helpful and merged my accounts for me with no problem.

KellyLG23 (USA) on CLZ Books Mobile

Feb 21, 2026

No more duplicates

There are a bunch of ways to sort and filter. I love the sound the scanner makes, it's very satisfying. It's great to have this since I like buying both online and in stores, I don't have to worry about ending up with duplicates.

Finneas Bunting on CLZ Books Mobile

Feb 17, 2026

The Best

This is the best app I’ve encountered for managing a home library. It does everything I need and more. Even better, the developer and team constantly add new functionality that makes the app even better.

hopkinsj100 (USA) on CLZ Books Mobile

Feb 17, 2026

Uitgebreid maar overzichtelijk

Ik ben al vanaf het begin een gebruiker van CLZ Books. Alle gegevens, die ik over een boek wil opslaan, kunnen erin. Het fijne is dat ik zo een totaaloverzicht heb op zowel de telefoon, de Ipad als op de Windows-PC. Met bijna 2000 boeken raak ik toch nooit het overzicht kwijt. Voor mij is ook handig dat ik in mijn boekenbestand specifieke dingen kan zoeken en apart uitdraaien, bijvoorbeeld voor een literatuuroverzicht. Invoeren van de gegevens is supergemakkelijk met ISBN of barcode. Happy user!

Wrakhans (Netherlands) on CLZ Books Mobile

Feb 13, 2026

Easy to use for all your cataloging and sales needs

I have been using CLZ Books for nearly twenty years and have never felt the need to look for an alternative database. Easy to use, with many useful features for the bibliophile and avid reader alike. Also useful if selling books is your side hustle, tracking previous and current values, stock numbers and whether a book has been in your inventory before. I recommend Collectorz Books highly.

The Great Panjandrum (Australia) on CLZ Books Mobile

Feb 13, 2026

Just What I Needed

Easily catalogue your book collection with a large number of categories to record all relevant information. Makes for easy referencing when your book hunting to not only know if you already have a book but also whether your copy has all the same features.

GradyB58 (USA) on CLZ Books Mobile

Feb 10, 2026

CLZ Books - Great

Ik gebruik CLZ Movies en CLZ Books al jarenlang met heel veel genoegen. Movies vanaf 2011 en Books vanaf 2016. De gebruikersvriendelijkheid en ondersteuning is in al die jaren op een zeer hoog peil gebleven. Alwin en zijn medewerkers reageren altijd heel erg snel. Wat erg te waarderen is dat er binnen CLZ altijd goed geluisterd wordt naar de gebruikers. Dat betekent dat er zinvolle updates en modificaties worden verwerkt. Steeds met dat luisterend oor naar de gebruikers.

Fred van Carla en Julia (Netherlands) on CLZ Books Mobile

Feb 10, 2026

Highly recommended !

This app organizes your books, very well done easy to use, set up no problems! Makes your library even more enjoyable.

Books II (USA) on CLZ Books Mobile

Feb 7, 2026

Excellent

I am using this to catalogue my late father’s library. Its database of books and its ability to search against ISBN are vital tools. I would be lost without it. The support staff are very responsive and the one time I needed them quickly resolved the issue.

Amaczero (United Kingdom) on CLZ Books Mobile

Feb 7, 2026

12 years later I am still happy!

The mobile app accesory to Collectorz excellent book organizing database system. Tracks your Ebooks, too. Collectorz offers a complete suite of custom databases to help you organize your life. They are constantly improving their product and offer customer service and support that many other companies can only dream of. You may be able to find cheaper or even free aps that claim to do much of what Collectorz offers, but you won't find better value anywhere.

Brian J Munro on CLZ Books Mobile