CLZ Books - catalog your books 4+

Just scan ISBN barcodes

Designed for iPad

    • 4.8 • 1.4K Ratings
    • Free
    • Offers In-App Purchases



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 free to use up to 100 books, for as long as you like.
This "Free Mode" gives you access to all functionality, including CLZ Cloud syncing (for online backups and transferring data between devices).

Got more than 100 books? Then subscribe and add as many books as you need:
* $1.49 per month
* $14.99 per year (~ $1.25 per month)

Two ways to catalog books:
1. scan ISBN barcodes with the built-in camera scanner (we guarantee a 98% success rate on your ISBN searches!)
2. search by author and title

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

Use Manage Collections from the menu to create multiple sub-sections in your database, called "collections". These will appears as tab Excel-like tabs at the bottom of your screen. Super useful to keep separate collections for different people, to separate physical books from your ebooks, to keep track of books you sold or have for sale, etc... the possibilities are endless.

Use the efficient edit and batch-edit screens to modify your book entries.
ALL fields can be edited, including the 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..

Browse your book collection as a list, as cards with big images, or as a "cover wall" with resizable cover thumbnails!
Sort by author, title, publication date, date added etc.. Group your books into folders by author, publisher, genre, subject, location, etc... Or just use the search box top right.

Use our CLZ Cloud service to:
* Always have an online cloud-backup of your book organizer database.
* Sync your book library between devices (e.g. your phones and tablets).
* View and share your book collection online, using the CLZ Cloud viewer website.
* Sync data to/from our Book Connect web-based software (separate subscription).
* Share your app subscription to other mobile devices, without paying again.

If you have any questions or have run into a problem, just contact us!
We love to hear your feedback, we are here to help with any problems or concerns, 7 days a week. In the app, tap the menu icon top left, then choose Contact Support.
Or come join our Club CLZ forum to talk to us and other users.

Did you know we offer similar apps for other collections?
* CLZ Movies, for cataloging your DVDs, Blu-rays and 4K UHDs
* CLZ Games, for cataloging your video games collection
* CLZ Music, for cataloging your CDs and vinyl records
* CLZ Comics, for cataloging your US comic books.

** About auto-renewable subscriptions:

* The payment will be charged to your iTunes Account when you confirm the purchase.
* The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
* Your account will be charged for renewal within 24-hours prior to the end of the current period. Automatic renewals will cost the same price you were originally charged for the subscription.
* You can manage your subscriptions and turn off auto-renewal by going to your Account Settings on the App Store after purchase. Terms of Use:

What’s New

Version 9.1.2

CLZ Books is now free to use up to 100 books, for as long as you like.
This "Free Mode" includes access to all functionality, including CLZ Cloud syncing (for online backups and transferring data between devices).

Got more than 100 books? Then subscribe (US $15 per year or US $1.50 per month) and add as many books as you need. Of course, feel free to try the app with 100 books first!

Ratings and Reviews

4.8 out of 5
1.4K Ratings

1.4K Ratings

Hale.Yeah ,

User since 2014

I’ve been collecting books my entire life and always wanted a library database like my local library. However, despite my best efforts, cataloging everything in excel and FileMaker Pro took forever and lacked the functionality I craved. I joined the Navy, and while I was in boot camp, my house burned down. My books were in the basement, and were destroyed by the water used to put out the fire. My family looked for a way to easily track my books for insurance purposes, and they found this app. This app answered both their needs and my needs. As I worked to rebuild my library, I kept buying duplicate books since I had a hard time differentiating the books I had lost from the books I had repurchased in my mind. I am now back over 6000 books and counting and I rely heavily on this app as well as the desktop version to keep track of my library. Sure, the core doesn’t have the most accurate or cleaned up data available and many plots are missing, but that allows us the take the data provided and make it our own. It’s a pity they had to change to a subscription service, because whenever I go to book stores or sales, I’m always suggesting CLZ products to my fellow patrons.

The barcode scanner saves me tons of time, I just wish there was a mass entry form for isbn numbers instead of opening the entry window, selecting the number keypad, and entering the isbn number. It’d save me a lot of time.

Miss BCAEA ,

Best App and Customer Service App Ever!!!!

I am most pleased to post a review for the CLZ Book App. I truly love this app. I searched for a cataloguing library app for years to catalog my book library. For years, I kept a paper copy of my books, but found this to be ineffective due to the fact that my collection over the past twenty-five years had grown by the thousands. But luckily, I kept searching and found the CLZ Book App. A couple of years ago, I read all of the reviews and convinced myself to purchase the app. Over the past couple of years, I have spent so much money on apps that promise, but do not deliver. But after purchasing this app, I can honestly say that my faith was restored. This is the BEST app for developing and maintaining

a library. It’s easy to input the information about books and the developers are constantly making changes to make this the best book cataloguing app ever. In the couple of years that I have used this app, I have found the developers are very responsive and responded quickly whenever I had an issue. If you are looking for an app to develop your library, the CLZ Book App is the answer. I highly recommend this app and give it a 5. If I could, I would give it a 5+++++.

Pippin414 ,

This App has awesome support!

I purchased the CLZ Book App a few months ago. I have to say that they helped me upload my collection when I was having problems with the CSV file. Their support has been so wonderful. Just recently the App started crashing on me on my phone when I tried to edit a new entry to place it in a collection. I contacted support and they got back to me before the day was out. He asked me some questions and gave me a few things to try. Before I could even try those suggestions out, I got an email saying that they had found the bug and were submitting their solution to Apple. It was so nice to know that there was a real person on the other side of the App and not an automated message. I love this app, for it’s ease of entry and also for the support. I bought the full version and am very happy with it.

I am adding to my review just to say that I had a question about moving books from one collection to another so I emailed support. I got an answer back within 15 minutes and the directions were clear and concise. Support is amazing for this app. You can tell the owner/designer takes great pride in the app and in providing support.

Developer Response ,

Hi Pippin414, Thank you for your great review. Happy to hear you had a good experience with customer support. We're always here for support emails, suggestions, whatever you need with the app. And indeed, we have real people on the other side!

Find us over at if anything else comes up for you!

App Privacy

The developer,, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Contact Info
  • User Content
  • Search History
  • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

More By This Developer

CLZ Comics - comic database
CLZ Movies - movie database
CLZ Games: video game database
CLZ Music - CD/vinyl database
CLZ Barry - Barcode Scanner
CLZ Scanner

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