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Keep track of your book collection - just scan ISBN barcodes

 
Automatically download book details by ISBNLike author, title, publisher, genres, subjects & cover art.
Just search our huge online book database ... ... by ISBN or by author & title.
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

Reviews from customers

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
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
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
November 19, 2021
Thanks again for a marvelous app
Thank You for reaching out! I sincerely appreciate that extra bit of customer support and actually cannot say enough good things about this app! Lol I have been telling all my friends about it! I even shared it to my pangobooks page and have an upcoming post on my instagram about this app! I uploaded over 500 books in one day! And over 100 more since then! I have numerous copies of each title and this app made it a DREAM come true for keeping track of all my books!
Thank you from the bottom of my book bogged heart!! I wish my P.O.S. inventory was that easy. I love that I can keep track of books that I have, that I don't have but wish I did, and books I have extras of and sell those but they stay in my catalog if it's a favorite... lol. I will definitely save it to the cloud then I didn't know what that function meant yet so thank you. — Reader Jo on CLZ Books
November 14, 2021
I love this app! Best ever!
I have soooo many books and I have been looking for a way to keep track of them all in one place and this is perfect so when I'm out I can check if I already have a book before I buy it! I added 102 individual titles (between 2-10 copies each) in less than 30 minutes, no lie this app is really that easy!! And the price?! The only thing I love more than books is a really great buy on something that actually does what it's supposed to and folks... this is it! — Jolene Lynch on CLZ Books
October 31, 2021
Keep track of what I have
I was so excited to use this app to help me keep track of what I have, keep specifics about what versions I have and to simply check on my phone when I'm out shopping to find items I want to add to the collection. The visuals and options to display are rewarding. Responses to questions are timely. It is one of those things that gets better the more you use it and learn it's capabilities. — Deborah skinner on CLZ Books
September 21, 2021
Does it all. Cover to Cover
I had tried a few catalogue apps for my book collection. Most were okay, but they didn’t do everything I wanted, or they were too difficult to manoeuvre through, or just too expensive. Then one day, about 7 or 8 years ago, the one I was using just quit working. I couldn’t even get into it to export what I had already entered in. I went online and found out that it was done, no longer supported, and no questions would be answered. So I went online and started looking. It didn’t take long. I found a reference to Book Collector. This was an app that I could download and it looked like it would everything that I wanted. It was a reasonable price, and so I decided to give it a try.
FABULOUS ! FABULOUS ! FABULOUS ! It does everything I need, and does it well, and smoothly, and with over 3500 books on my shelves, that’s important. Since then I have switched to their cloud service, CLZ Books. I no longer have to use my memory space. I just log in, make entries, deletions or changes and it’s done. The price is still very reasonable. This is the best book cataloguing service of any I have ever used. They also offer apps or cloud service for collectors of Movies, Music, Comics and Games. This team of developers has done and continues to an outstanding job. I would 100% recommend this to anyone who has a library to keep track of. — Ti-Cat Matt (Canada) on CLZ Books
September 15, 2021
Perfect for the classroom!
I love this app! I have been a teacher for 29 years and have been trying to keep track of all of my classroom books. I have over 1,000 children’s books that are now organized nicely with in this app. I love the features of being able to tag the book with key words for future searches. Uploading books is easy and quick. — WileyMom3 (USA) on CLZ Books
September 11, 2021
I rely on and trust CLZ
Best software for book collectors. I have so many titles in different formats and different places, i can not keep track without CLZ.It’s reliable, customizable, fun to work with. Syncs perfectly with its PC version. Always improving, and excellent customer service. Highly recommended — MagoryOH (Canada) on CLZ Books
July 17, 2021
Great
It's a great way to keep track of my book collection. — Rich Umbenhauer on CLZ Books
July 13, 2021
Perfect app, makes things so much easier!
As someone who is always buying books, and couldn't keep track of what I had, this was a must have for me! You can mark them as part of a series, and what order they go in, you also can edit any field to what ever you want if you want a different way. Now I always know what books I have in a series and never bought a double again! I've enjoyed it so much I use their Movie app too, and subscribe to the online service for a version of both on my laptop! — Rob Conley on CLZ Books
June 22, 2021
Perfect for our Clubhouse library
Love this app. It works perfectly for our community library of more than 5,300 books. Our card catalog used to be 3x5 index cards that were never updated regularly, so CLZ Books really helps to keep track of what we have. — V. Stephens on CLZ Books
June 14, 2021
Best book database I’ve found!!
UPDATE: once again, Alwin and his team provide the best customer service available! I noted an issue and received an immediate (less than 2 minutes!) response. Naturally, he was right and I was wrong, oops. Keep your book collection neat and tidy everywhere you go.
CLZ Books has to be the best app available! The developers spend countless hours upgrading, improving and revising so that the end user experience is fantastic! I can think of no other app that I recommend so vigorously. Been using CLZ Books for two years now and have been pleasantly surprised. Top quality customer service. (This alone grants the developers 5 Stars) Inexpensive compared to other apps. They are continually interested in updating and improving this app for everyone. Easy to use and enter new books. There’s a space for almost everything and the final result will help you keep track of all your times. Many thanks. — Consumerpaul on CLZ Books
June 14, 2021
School library
Great app to keep track of our book collection. — Th0Gr0 on CLZ Books
June 05, 2021
Long time user
I have been collecting books for what feels like forever. I started using Collectorz book collector back in 2000 on a Compaq iPaq to keep track of my books, after buying too many duplicate copies of boo I already owned. Since then I have changed platforms over the years - Windows and Mac for desktop, Android and now CLZ Books for iOS.
I have upgraded for each new release because of how happy I have been with the app. It allows me to instantly verify if I already have a book in my library when I am out shopping. It also helps me when I try to locate a particular book in my library by filling in the location with information on which room/bookshelf it’s located in.
I’ve been telling all my book collecting friends about it and convinced a few to give it a try.
My advice: try it, you’ll like it. — bfine78 on CLZ Books
June 01, 2021
The best
Best way to keep books and keep track of when read. — Steven B on CLZ Books
June 01, 2021
Very Handy!
If you are a book collector (a bibliophile!) then at a certain point you can’t keep an accurate track of your collection in your head. This becomes a problem when you are in a book store, you see something interesting and you really should know if you already have that book, or that particular edition or if the asking price is a bargain or too high. CLZ Books on the iPhone is a perfect way to keep track of not only what you have in your collection but also what is on your “want list” with lots of details. Using a book’s ISBN code, CLZ Books will fill in most of the critical data, including an image of the cover, and it is quite easy to add the missing pieces that are important to you (date of purchase, which bookstore, etc.). All this information sitting there sitting in your phone ready to be tapped into on a moment’s notice. I’ve been a CLZ customer for many years, starting when only a PC version was available. I didn’t choose their program lightly. It was just the best one available at the time. Their constant improvements and their expansion into the Mac world and then onto the iPhone has confirmed that my early adoption was valid and I still am a total fan of their app and believe that the price is a bargain for the product and the service. — jfair3 on CLZ Books
May 30, 2021
Great app and great team
I have been using the desktop Book Collector for many years to keep track of the books I own, the books I’ve read, and the books I want to read. The support (mostly for help moving to new computers over the years) has been prompt and kind. I love the CLZ mobile app because I can sync with the desktop version and check my collection while on the go. I’ve never needed support with the app but know that the team would respond promptly if necessary. All around good people with great products. — Orgmom on CLZ Books
May 29, 2021
A super app for book collectors
The CLZ book program works beautifully. I have over 6300 books and have used this program for several years. I wanted a program that would be easy to use and accurate. I was often buying duplicate books because I could not determine if I already had a certain book. Using this program eliminated this problem. This has to be the BEST program on the market for tracking books and providing the records for insurance in case of fire or theft. I highly recommend this program for anyone trying to keep track of their books. — Lexkyusa on CLZ Books
May 29, 2021
Does it all. Cover to Cover
I had tried a few catalogue apps for my book collection. Most were okay, but they didn’t do everything I wanted, or they were too difficult to manoeuvre through, or just too expensive. Then one day, about 7 or 8 years ago, the one I was using just quit working. I couldn’t even get into it to export what I had already entered in. I went online and found out that it was done, no longer supported, and no questions would be answered. So I went online and started looking. It didn’t take long. I found a reference to Book Collector. This was an app that I could download and it looked like it would everything that I wanted. It was a reasonable price, and so I decided to give it a try.
FABULOUS ! FABULOUS ! FABULOUS !
It does everything I need, and does it well, and smoothly, and with over 3500 books on my shelves, that’s important.
Since then I have switched to their cloud service, CLZ Books. I no longer have to use my memory space. I just log in, make entries, deletions or changes and it’s done. The price is still very reasonable. This is the best book cataloguing service of any I have ever used. They also offer apps or cloud service for collectors of Movies, Music, Comics and Games. This team of developers has done and continues to an outstanding job. I would 100% recommend this to anyone who has a library to keep track of. — Ti-Cat Matt on CLZ Books
May 27, 2021
A must for prolific readers
Having an awful lot of time for reading over the past year or so, this app helps me to keep track of what I’ve read-especially useful if you’re a kindle reader where you lose track of what you’ve read without a physical cover to refer to! The app works well and so far I have never lost all my data so it must be fairly idiot proof! — Emmabookworm on CLZ Books
May 25, 2021
Easy to use, great support
I looked at many other programs and found the book app superior to all the rest. It's four years later and I thought I would update what I thought about this app. I love the ability to scan your smartphone and have a transmitted to your desktop automatically. It's easy to use, keep track of your books in different forms and you can change the looks and the settings of how they are displayed. It's a great little app, easy to use with great support. Rates five — Wayne Dyche on CLZ Books
May 23, 2021
Great app to track my books
This is a great app for keeping track of your book collection, whatever you have. I have hundreds of books, paperback, hardcover, trade paperback, and hundreds of kindle books. The app is so customizable, and you can search your database in so many ways. By author, genre, publisher, type of book, read or unread. Customer service is great as well. These people really seem to care about you, and help to resolve any problems you may have. And you can keep your collection synced between your iPhone, and iPads. Works great, and it’s well worth the $15 a year they charge. — Thedeebert60 on CLZ Books
March 31, 2021
Best book database I’ve found
Been using CLZ Books for two years now and have been pleasantly surprised. Top quality customer service. (This alone grants the developers 5 Stars) Inexpensive compared to other apps. They are continually interested in updating and improving this app for everyone. Easy to use and enter new books. There’s a space for almost everything and the final result will help you keep track of all your times. Many thanks. — Consumerpaul on CLZ Books
January 13, 2021
Great program
Great program to keep track of all my books and great customer service get back to u same day. — B Kelley on CLZ Books
November 05, 2020
Keeps getting better
Great app for keeping track of books including ebooks., easy to use and keep track across all devices. This app keeps getting better, regular updates and improvments. — Richard Davies on CLZ Books
September 28, 2020
I love it
I am a book nerd and it is great to keep track of what I own when i am in a used book store. Also nice for recommendations. I love it. — Jgeis1701 on CLZ Books
September 27, 2020
Book Database
Great database for keeping track of books read, making notes of the storylines - easy to use and syncs between IPad and IPhone. — Yvonne1234567890 on CLZ Books
August 26, 2020
Perfect app
Perfect way to keep track of my 8000+ books. — Mathilda Bach-Frommer on CLZ Books

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