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Book Database Software - catalog your book collection

Keep track of your book collection and wish listMobile app, web-app or downloadable? Your choice!
Automatic book details and cover imagesJust search our huge online book database by ISBN
Over 40 million ISBNs recognizedGuaranteed 97% success rate on your ISBN searches!
For your phone
  • Available for iOS and Android
  • Built-in camera barcode scanner
  • Sync data with the Movie Connect software
For your computer
  • For Windows, macOS, Linux, chromeOS, etc.
  • Use with the free CLZ Barry barcode scanner app
  • Sync data with the CLZ Movies mobile app

Or... use them both, as perfect companions!

Both CLZ Books and Book Connect can be used on their own, as a stand-alone solution. But these tools really come to live when used together, as they are great companions.
While away from your computer use CLZ Books on your phone, then use Book Connect 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.

CLZ Books
1 year
Book Connect
1 year
USD $0.00
USD $0.00
save USD $0.00

Also still available: Book Collector for Windows

Book Collector is our legacy desktop software. Old-skool software that you install on your own computer, with your data stored locally.
Using Book Collector is only recommended for advanced Windows users, who know how to install/update software, manage folder and file permissions, configure firewall/security software, make their own backups, etc...

Learn more about Book Collector

Latest software updates

Great app! Easy to use, clearly and cleanly laid out. Adding books is a breeze - just scan the barcode. I really like that my collection information syncs with and is backed up in the cloud. Customer service, on the rare occasions it is needed, is just excellent - I had a question to which the response was (1) polite, (2) really fast, and (3) really well and clearly explained. I am very, very pleased with this app and company. — Sean Alexander on April 28, 2022

Reviews from customers

May 11, 2022
This App is amazing!!! Finally an easy way to list my scores of books! — Ria&ily (USA) on CLZ Books
May 10, 2022
The best book app
Best book catalogue ap ever So easy to keep track of my books. — jewel port on CLZ Books
May 06, 2022
Book library
I recommend Collectorz to all the collectors I know and my father-in-law loves it for keeping track of his extensive book library. — Linda Fay (United Kingdom) on Book Collector
May 06, 2022
Keep up the good work guys!
This app takes a bit if getting used to at first, but the catalogue is extensive, and most bar codes and isbn numbers can be used to autofill a good chuck of a collection. — JazzTripp on CLZ Books
May 01, 2022
Was hesistant due to cost, totally worth it
Very impressive database. It's been able to recognize various pre barcode books with no problem based on isbn. — TheWillypedersen on CLZ Books
April 28, 2022
Adding books is a breeze
Great app! Easy to use, clearly and cleanly laid out. Adding books is a breeze - just scan the barcode. I really like that my collection information syncs with and is backed up in the cloud. Customer service, on the rare occasions it is needed, is just excellent - I had a question to which the response was (1) polite, (2) really fast, and (3) really well and clearly explained. I am very, very pleased with this app and company. — Sean Alexander on CLZ Books
April 18, 2022
Excellent App
We have a large collection of books. This app allows us to catalogue our collection and in doing so provides a real time view of books on hand. It also serves as a valuable resource to provide guidance for insurance coverage and the family with what is available to be borrowed. — greenwom02 (Australia) on CLZ Books
April 17, 2022
Simple and easy
I had another app that I was using to store my collections of books that I own to help me remember but it never added titles and that app disappeared from the App Store. I like this app because I get to just scan my books into it and it sorts it out in order for me and I don’t have to put any guesses whether I own a book or not when I’m out or online shopping I just check this app. Also way cheaper then other organizations apps. — Hhggttddkkffttbh (New Zealand) on CLZ Books
April 17, 2022
Great app
Great software for organizing your books! — A Google user on CLZ Books
April 10, 2022
I'm so glad I found CLZ Books!
This is a brand new app for me and I am loving it! Tech support is amazing. I'm not very tech savvy so I did need their help. — Grace Flynn on CLZ Books
April 04, 2022
Good app
Just started using it. So far so good. — kim beydoun on CLZ Books
March 31, 2022
Lo recomiendo
Aplicación muy buena. Además puedo añadir ahora que su servicio de ayuda es muy rápido, muy amable y muy eficaz. — José Ignacio Bulnes on CLZ Books
March 29, 2022
Love Book Connect
Many thanks as always for your kindness and generosity. I have always appreciated working with you.
A real blessing to me to keep my library in shape. You have a GREAT product in Book Connect, and I can be assured that all your other offerings have the same high degree of excellence.
At age 82, I really appreciate the simplicity and completeness of Book Connect. — Larry Gilliland (USA) on Book Collector
March 29, 2022
Excelente aplicación para catalogar tu colección de libros
Excelente aplicación para catalogar tu colección de libros. Valoro el hecho de que permita exportar e importar los datos (otras aplicaciones similares no lo permiten) y de esta manera poder utilizarlos a tu conveniencia. Excelente servicio de atención al cliente que supongo debe funcionar las 24 horas del día, pues me contestaron una duda por correo al poco rato y era en domingo. La búsqueda de los libros mediante escaneo de código de barras funciona muy bien. El único inconveniente, hasta ahora, es el precio. Funciona por suscripción mensual o anual y yo preferiría un pago único, aunque habrá que ver si las actualizaciones periódicas que prometen justifican ese sistema de negocio.
De momento, muy satisfecho. — David Laskowitz (Spain) on CLZ Books
March 23, 2022
CLZ book app
This app lets you do it all, great organizational tool. So simple to add books and put in custom terms for your own reference. As important the service is great, any questions they are right back to you with a solution. — Books II (USA) on CLZ Books
March 19, 2022
100% Worth the money
A great app! I had been looking for a book cataloging app and the ones I had seen were fine. I was hesitant to purchase this app when I came across it, thinking that maybe paying $20+ wouldn't be necessary just to have a list of books on my phone, but as I played around with the free version, it really was what I was looking for. I bought this one and the CLZ Movies and I never regretted it! It was 100% worth the money. The customer service is also excellent. They're very courteous and helpful. — A Google user on CLZ Books
March 19, 2022
Keep track the books I've read
Since I read a lot, I really wanted a way to keep track the books I've read, author, plot, etc. After trying a few apps out, I stumbled upon CLZ Books and I love this app. It does just what I was looking for and more. When I ran into a small glitch, the creators were very responsive and worked with me until it was fixed. — Jill Hafliger on CLZ Books
March 16, 2022
Excellent tool
An excellent tool to keep track of, and categorize my large collection. — Josh Koehn on CLZ Books
March 15, 2022
Brilliant app
Your app really is brilliant. Responsive, super-quick, SO well designed and satisfying to use. Thank you and all your team for designing and maintaining something so outstandingly good. — Lyn (United Kingdom) on CLZ Books
March 15, 2022
Love this app
No more buying a book only to find I already have a copy. I can keep my series together, and fill in missing books. — Tonya Zackus on CLZ Books
March 13, 2022
Great tool
I just downloaded it today and I already love it. Best book cataloguing app I've found. Gives you lots of customization abilities. — JD Hendricks on CLZ Books
February 26, 2022
Book Collectorz is one amazing application!
I've been using it now for a few years to manage a 1000 book library collection for my quilt guild. What I really love is that the Collectorz team is constantly making improvements to the app that make it easier and faster for the user to manage their collection. The team is responsive and genuinely interested in what their users have to say about the program. The app is simple to use, and very intuitive. You can slice and dice your collection in any way you want to see what you have, and there are a lot of customizable fields if you have specific interests. The connection to "core" is flawless, and simply by putting in the ISBN from the back of a book you get all the information you need in seconds. The price is very reasonable for the value you get from this app.
While I haven't used their other products, I'm sure they are just as refined and useful. Thank you CLZ team, great job! — Mary Pimentel-Wheeler (USA) on Book Collector
February 25, 2022
This is an excellent way to organize, store and access info about your books. Really recommend it. — Ydoom1234 (USA) on CLZ Books
February 25, 2022
Will never let you down
Perfect fulfilment of all the promised services. Indispensabile for medium to large libraries. — Paolo Volpara on CLZ Books
February 21, 2022
CLZ Books
This app is simply brilliant! Very easy to use, intuitive and exceptionally well-designed. Surpasses all my expectations and is excellent value for money. Any queries I have had have been responded to within hours with comprehensive, simple and concise answers or solutions. — 39.+++.me (United Kingdom) on CLZ Books
February 20, 2022
Top Notch App!
The CLZ Book app is the best app available for keeping track of your book collection. I use this app a lot when I go to Barnes & Noble. I can’t always remember if I have already purchased a book, so I open the CLZ Book app and check my collection. It has saved me several times from making duplicate purchases.
I look through my collection a lot and it is just a great source of reference! — LGCTR (USA) on CLZ Books
February 18, 2022
Pleased with this program
I'm very pleased with this program. A few more fields than I need but operates smoothly. Customer response was fast and helpful when I encountered a transition problem in moving to a new tablet.
Highly recommend this app if you have lots of books. — Eric Singleton on CLZ Books
February 15, 2022
Love this app
Our books had been stored for eleven years until we bought our home and have recently been put in our library downstairs. This really helped us to record which books and series we owned. It saved me from buying double books, as I've done in the past. — Bernadene Whitten on CLZ Books
February 08, 2022
Awesome app
This app is awesome, love being able to have all my books listed in one place. Adding them in is super easy to do and there are a lot of nice additional features (cloud syncing, multiple "shelves," etc). I think this is well worth the cost! Support also responds very quickly! — Erica McCready on CLZ Books
February 05, 2022
The best
I've been using this app for years and it is the best app for its purpose. — Rafael Denaldi on CLZ Books

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