CLZ Books - library organizer

In-app purchases
4.7
2.9K reviews
100K+
Downloads
Content rating
PEGI 3
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About this app

Easily catalog your book collection. Just scan ISBN barcodes or search our CLZ Core online book database by author and title.. Automatic book details and cover art.

CLZ Books is a paid subscription app, costing US $1.99 per month or US $19.99 per year.
Start the free 7-day trial to try all of the app's features and online services!

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...

FULL 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

GOT A QUESTION OR NEED HELP?
We are always ready to help or to answer your questions, 7 days a week.
Just use "Contact Support" or "CLZ Club forum" from the menu.

OTHER CLZ APPS:
* CLZ Movies, for cataloging your DVDs, Blu-rays and 4K UHDs
* CLZ Music, for creating a database of your CDs and vinyl records
* CLZ Comics, for your collection of US comic books.
* CLZ Games, for creating a database of your video game collection

ABOUT COLLECTORZ / CLZ
CLZ has been developing collection database software since 1996. Located in Amsterdam, the Netherlands, the CLZ team now consists of 12 guys and one gal. We're always working to bring you regular updates for the apps and software, and to keep our Core online databases up-to-date with all weekly releases.

CLZ USERS ABOUT CLZ BOOKS:

"A fantastically nice book library app that I am incredibly happy with, you really get an overview of the things that need to be sorted out, for a good overview, easy to use and everything works seamlessly. Strongly recommend."
Emmanate (Norway)

"The best I have found. I have over 1200 books and have used a number of book cataloging apps over the years. CLZ Books does the job of keeping track of my library and gets syncing right. Most importantly (speaking as a software developer) they keep improving the app. It’s tough to make a business of niche software products. These folks have apparently figured out how to make a go of it and they keep improving. Kudos to them!"
LEK2 (USA)

"This is THE ONE. I have a lot of books, and I have been looking for a very long time for a great library cataloging app. A friend of mine showed me this one and… Yes. This is it. So easy to use, so easy to add books and create collections, add covers, anything you want to do. I love it I love it I love it.
Also Customer Service is absolutely terrific."
OolooKitty

"I first gave 5 stars to this in 2018. In 2024, it still delights. If I could give more I still would now. Such a useful book database app which is constantly being improved.
I have had occasion to contact them a couple of times and they have always been courteous, friendly and immediately helpful. I can thoroughly recommend."
Mark Maffey

"This is the best book cataloguing application and the mobile version is a god send with the ability to scan ISBN bar code."
Michael Bartlett (USA)
Updated on
Nov 18, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity and App info and performance
This app may collect these data types
Personal info, App activity, and App info and performance
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.7
2.55K reviews
Don Hall
November 13, 2024
I have collected books since I was very young so let's say 45 years. I have started and stopped cataloging my collection at least 10 times over the last 15 years. Created access and excel programs only to give up on it due to it being cumbersome. I have tried other apps over the last couple of years only to lose data along with other issues. This time I did trials on different apps and landed on CLZ Books. This was the best thing I could have purchased for my books. Absolutely fantastic!
12 people found this review helpful
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Heyhoudini Johnson
November 12, 2024
This is, by far, the best organization app for my books I've ever used. It pulls resources from every place it's able I've got over 1400 books I've added location labels and sort order. If you're a book lover, the yearly cost is 100% worth it, it's saved me when I had a bookcase collapse! I've shared this app with family, friends and strangers, I love the online availability, I can create separate lists, sort different ways. I pull up the app while I'm shopping to keep me from buying dups!
6 people found this review helpful
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Karin Powell
November 16, 2024
My husband is an avid bookworm, and I use CLZ books to catalog every paper or digital book he owns. It's easy to use and it keeps getting better and better with every update. I have been a subscriber for awhile, and I can't imagine being without CLZ Books.
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What’s new

Fixed:

Add Books: Scan ISBN:
* A crash could occur during scanning of ISBNs
* Crash if user did not grant camera permissions
* Crash on devices without a camera

Add Books: Type ISBN:
* "Invalid ISBN" error when copy/pasting ISBNs with spaces, dashes, enters, etc.
* A double keyboard could appear when switching between CLZ Books and other apps