About CLZ Books - library organizer
Easily catalog your book collection. Automatic book details, book values and cover art. Just scan ISBN barcodes or search CLZ Core by author and title. CLZ Books is a paid subscription app, costing US $1.99 per month or...
Easily catalog your book collection. Automatic book details, book values and cover art.
Just scan ISBN barcodes or search CLZ Core by author and title.
CLZ Books is a paid subscription app, costing US $1.99 per month or US $19.99 per year.
Use the free 7-day trial to try all of the app's features and online services!
TWO EASY WAYS TO ADD BOOKS:
1. Search our CLZ Core by ISBN:
You can either scan ISBN barcodes, ISBN numbers using OCR or use a USB barcode scanner
Guaranteed 98% success rate on ISBN lookups!
2. Search our CLZ Core 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
Previous Versions
Here you can find the changelog of CLZ Books - library organizer since it was posted on our website on 2014-03-04 23:59:23.
The latest version is 10.7.2 and it was updated on 2026-06-30 06:02:42. See below the changes in each version.
CLZ Books - library organizer version 10.7.2
Updated At: 2026-05-05
Changes: Fixed:
* Sync with CLZ Cloud: Updates: Custom covers did not download correctly
* Sync screen could open when tapping Edit during image downloads
* Details view not fully visible in some cases
* "Downloading images" bar could appear when nothing was downloading
* Book template: eye icon showed as "Not Read" incorrectly with 1 read event
CLZ Books - library organizer version 10.7.1
Updated At: 2026-03-30
Changes: Faster down-syncing from CLZ Cloud:
* Syncing now down-syncs the *data* first, while queuing the *image* downloads. This makes the data sync super fast.
* Downloading the images is much quicker too, especially on fast connections, as it downloads multiple images at the same time.
* As soon as the data download has completed, you can close the Sync screen and start using the app. The image downloads will continue at the bottom of the main screen, prioritising images that are "in view".
CLZ Books - library organizer version 10.6.1
Updated At: 2026-02-24
Changes: CLZ Books v10.6 is here! Bringing many new fields (including the big one: Reading History)!
New:
* Track your Reading History, with multiple read sessions, each having Start and End Dates, Reading Status, Reading Progress and Reader fields
* More book dimension fields: Spine Thickness and Weight, delivered automatically from Core!
* New field: Dust Cover Condition
* New field: Place of Publication and Original Place of Publication
CLZ Books - library organizer version 10.5.2
Updated At: 2026-01-14
Changes: Fixed:
* Scrolling lists / tapping buttons / selecting items in a list / removing items could suddenly stop working
* Covers stayed zoomed in if you navigated out of an item and into another
* Edit screen: Taking a picture for your cover could sometimes remove all other information from that item
* Selecting: Tapping "Select All" in didn't show items being selected in images view
CLZ Books - library organizer version 10.5.1
Updated At: 2026-01-06
Changes: New:
* Faster 'snappier' navigation in the main screen (going from folder to folder, back to list/images/card view, going to and back out of viewing details) and smooth animations when doing so
* Settings: Download values from Core: you can now disable downloading of values. This will also remove all values you already have from Core
* Searching ISBN10/ISBN13 in your own collection will now find it, no matter if you have ISBN10 or ISBN13 filled in for it
Fixed:
* A couple of navigation issues
CLZ Books - library organizer version 10.4.1
Updated At: 2025-11-13
Changes: New "One-by-One" mode for adding books by scanning ISBNs:
Up till now, adding by ISBN always used a "queue":
Scan barcodes to add books to a queue, then add em all in one go. Quick and efficient.
Today, we are adding a "One-by-One" mode, *without* a queue:
Scan a barcode, the book details are shown, tap Add, and instantly return to the camera screen to scan the next one. Clear and easy.
Switch between the two modes using the queue icon at the bottom right of the camera screen.
CLZ Books - library organizer version 10.3.2
Updated At: 2025-10-28
Changes: Fixed:
- Details: The data at the bottom could be hidden behind the navigation buttons
CLZ Books - library organizer version 10.2.4
Updated At: 2025-09-02
Changes: Fixed:
* Edit Book: Personal tab didn't show any fields when using next/previous buttons
CLZ Books - library organizer version 10.2.2
Updated At: 2025-07-28
Changes: Fixed:
* Scanning ISBNs: Improved accuracy, now only tracks actual ISBNs, and no more premature beeping
* Scanning ISBNs: On some devices, the back camera wasn't used for scanning
* Manage Pick List: Back button wasn't always working
* Book Details didn't always refresh correctly after editing the cover
* Add Books: Typing ISBNs manually wasn't working correctly
Also: CLZ Books has been updated to the new Play Store API
CLZ Books - library organizer version 10.2.1
Updated At: 2025-04-03
Changes: New in the CLZ Books 10.2 update:
Automatic book values and retail prices, based on average prices on various online used book stores.
* Get Values from CLZ Core, downloaded into the Value field
* Use Update Values from the menu to retrieve/update values
* Get Retail Prices for books, in the new Retail Price field
* See the values in your list view and details panel
* See value stats and top lists in the Statistics screen
