Scan ISBN barcodes

Create your own book database

Automatically catalog your books by scanning ISBNsGet author, title, publisher, genres, subjects & cover art.
Just search our huge online book database ... ... by scanning ISBN barcodes
Over 40 million ISBNs recognizedGuaranteed 97% success rate on your ISBN searches!
CLZ Books icon CLZ Books
Mobile
Mobile app for your phone or tablet
iOS & Android
example
USD $19.95 per year
More about the mobile app
CLZ Books icon CLZ Books
Web
Web-based software for your computer
Windows & macOS
example
USD $39.95 per year
More about the web app
CLZ Books
Mobile + Web
CLZ Books Mobile
1 year
+
CLZ Books Web
1 year
USD $0.00
USD $0.00
save USD $0.00

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

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

Latest software updates

Nov 27, 2024
Absolutely Love
This app is exactly what I was looking for to catalog my books. I found myself buying duplicates, and decided to go in search of an app that would help me keep track of my books. CLZ Books - library organizer does exactly that and more. I keep books in different rooms in my house, I can note where the books are, mark if I have loaned them out and to who, I can rate them and note when I read them and keep personal notes. It is easy to use, and after initially loading my books, I am able to scan new books easily to add them to the collection. Highly recommend if you have a good amount of books you would like to keep track of.
Booksrox (USA) on CLZ Books Mobile

Reviews from customers

Nov 22, 2024
Great app!!!
I have a lot of books, and I tend to buy those in a certain genre: biography, history, adventure tales about the sea and exploration. Then, when I go in a bookstore and see an appealing book, I would wonder if I already had it and in an excess of caution would often buy it. I knew that I had some duplicates, and this app was great for helping me figure out what I already have and shouldn’t purchase, so I figure that it pays for itself!
I also love that it lets me note where the books are, so that, if I’m looking for a history of Ireland, I know that it’s in my home office. And scanning the books is super fast and easy! I would give this 10 stars if they were an option! I learned about this app from a bookstore and only wish I’d known about it sooner!
Santanas (USA) on CLZ Books Mobile
Nov 19, 2024
Beste book data base
Al gebruiker vanaf het eerste uur, iets moeilijker bij de start jaren geleden, maar een fantastische manier om je boeken bij te houden.
De meeste van onze boeken zijn oude boeken, 1600-1800 en dat blijft nogal wat werk om alles foutloos in te tikken, of je vind ze niet meer terug, maar toch super, om je collectie op de slaan. Ik ben nu aan ongeveer nr 2000, maar aangezien het veelal meerdere volumes betreft toch al zeker 3000 boeken. Ik ken geen betere manier om alles bij te houden.
Recentere en nieuwe boeken, dat is echt eenvoudig, barcode scannen, pc openen en alles klaar, super toch! Ook alles op je iphone, super om na te kijken op de boekenbeurs wat je al in collectie hebt of niet! Wij zijn daar super tevreden mee, zelfs al vraagt het soms wat werk om de oude boeken te catalogeren.
Ook verplaatsen van collecties, uitprinten, heel veel mogelijkheden.
Met dank aan alle bedenkers en ontwerpers van CLZ !
Magda De Smedt (Belgium) on CLZ Books Mobile
Nov 17, 2024
My books organized
Great way to keep all your books updated and organized. every time I go buy new books I scan them in and get them saved!
Brittany Booth on CLZ Books Mobile
Nov 15, 2024
User-friendly for all age groups
Finding this app at 63 was a blessing. I have an extraordinary library and continue to collect, yet sometimes you find out you already have the book. This app has been helping me keep track of my existing library and when shopping, I pre-scan the book to ensure I don't own it. Thank you.
Sherlocked61 (USA) on CLZ Books Mobile
Nov 3, 2024
Book Lover? A Must Have App
CLZ makes it so easy to track my book collection in one tab, my 2024 Read in another tab,2023, etc. Used for 3 years now, will Always use it. Also saves me from duplicate purchases as the scanner will tell me if a book is already in my collection just by scanning the back cover code.
fuzzy gemma (Canada) on CLZ Books Mobile
Jun 11, 2024
Easy to scan and upload
Started with CLZ on the computer storing all the wife's books in her library, after a few walks back and forth II downloaded mobile app and haven't looked back, easy to scan and upload.
Douglas Berwick (Australia) on CLZ Books Mobile
Mar 16, 2024
The best cataloguing application
This is the best cataloguing application and the mobile version is a god send with the ability to scan ISBN bar code.
Michael Bartlett (USA) on CLZ Books Mobile
Feb 26, 2024
Scanning my books
I love this scanning option. I went through 300 books and less than half an hour.
Julio Jimenez on CLZ Books Mobile
Jan 12, 2024
As advertised
Thank you for allowing me to spin the pie chart at the bottom of the statistics page - 10/10 app, does as advertised, my only suggestion would be to add a more satisfying beep sound when you scan an isbn:)
Repulsive__ (Australia) on CLZ Books Mobile
Sep 11, 2023
A serious time-saver!
It's a working quite well, thank you! I've managed to catalog over 160 books in just under 2 hours of time. With a collection exceeding 1500 books, this app is a serious time-saver! Out of these books so far, I've only found 3 needed a little extra love or manual attention. The barcode scanning is awesome!
Ron J. on CLZ Books Mobile
Jun 21, 2023
Great for keeping track of books
Barcode scanner fantastic. Good online database for manual search.
Update 6/23. Tech help prompt and responsive and App continues to be improved. Took 3 years to enter the thousands of books in our home library. Great having them at our fingertips. Now no second guessing about whether we've bought a book or read it before so, in addition to the unparalleled convenience our having the library on our phones we've saved more than it cost in not doubling up.
Barry Powell on CLZ Books Mobile
May 2, 2023
So easy
Scanning books is so easy! I was using a different app to track the books i own, but was having problems with it properly tracking them. This app is so easy to add and navigate!
Amanda Rosman on CLZ Books Mobile
Apr 25, 2023
Love Bookcollector!
You guys are SO AWSOME!! I LOVE both the app and online, though I am using the app most of the time now. It is wonderful to be able to scan in new boioks and and notes, edit, wherever I am! I am happy to support!
I have been a very satisfied customer for many years. It is so useful and fun! I never fall behind in keeping my new book purchases entered because with the phone app I can do it in 30 seconds or less!
I LOVE being able to scroll through my book library by viewing the covers! While reading a book, I can add personal notes for future reference and to make the book more searchable for me later ( like a note as to who recommended the book to me)
AND whenever I am having a conversation and want to tell someone about a book that is relevant, I quickly do a search of my collection ( on the app), even if I can’t remember the exact title or author, usually a key word is enough to find it.
Would you believe that my personal library is over 4,500 books? I would be overwhelmed without the Bookcollector products. It is so fun to have the info available right at my fingertips on my cellphone! And to know it is safely stored on the cloud. But even if you only have 100 books (or comics or music), I highly recommend CollectorZ. Truly a great value from a wonderful thoughtful supportive company with years of expert development!
Anita O. (USA)
Oct 26, 2022
Does the job
I’ve tried a few cataloguing apps and this combines the best of all of them. Very customisable with fast scanning via your phone’s camera.
When contacted the customer support is super fast and personal.
psmorrison (United Kingdom) on CLZ Books Mobile
Oct 25, 2022
Great program and service
I was using this app to catalog the 4000 books in my collection. After about 1000 bucks I upgraded to an iPhone 14. It turns out that the camera on the iPhone 14 will not properly scan the barcode. I contacted the developer and they immediately got back to me. They kept me informed of the progress of the upgrade. They have subsequently fixed the problem and the app works fine now.
The app itself is particularly useful if you have books published after 1967 - you can just scan the ISBN code. You have to manually enter the name of pre-ISBN books, but usually the database that the app is connected to will have some of the information. You can then incorporate that information into your collection database.
collector of books (USA) on CLZ Books Mobile
Oct 13, 2022
Good
ISBN code scanning works nicely, very helpful.
34zwecke (Germany) on CLZ Books Mobile
Jun 10, 2022
Love the CLZ series of apps
I use this one for my books and the CLZ Games for my modern & retro games. I am happy to pay for premium of both just because the price is so reasonable and the apps are so good. Being able to add items by scanning the barcode with the camera on your phone is just awesome. Love it.
Shane Hurley (Ireland) on CLZ Books Mobile
Apr 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 Mobile
Apr 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 Mobile
Mar 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 Mobile
Jan 18, 2022
This is your sign
If you're reading reviews to help you decide if you should splurge on the subscription - this is your sign - you absolutely should. Estimate how much time it would take you to manually catalogue your books & subtract the time it takes to just scan the barcodes of all your books. Multiple the remaining time by minimum wage (or your actual hourly rate). Is it more than $1.49/month in time saved? Do it.
Claire B on CLZ Books Mobile
Jan 12, 2022
New user happy
Just started using this app and the mixture of simplicity and complexity raises it above the competition. Now got to scan about 1000 more books!
DG_London (United Kingdom) on CLZ Books Mobile
Jan 8, 2022
Great range of features and tools
I've been using this app (and its Windows version) for a number of years and have found it excellent with a great range of features and tools. Adding books to the database is very easy either by manual entry or by scanning the barcode. Updates and improvements come through regularly at no additional cost. Customer service and help are also very good and very prompt. I highly recommend it.
Geoff Norridge (United Kingdom) on CLZ Books Mobile
Dec 16, 2021
Me gusta
El uso simultáneo con el mac y el iphone me da mucha flexibilidad, aunque es más completa la batería de datos del programa para mac. Sencillo de usar, el escaneo de isbn (hay algunos que aún no localiza) es de lo mejor para obtener datos rápidamente.
Lpf64 on CLZ Books Mobile
Sep 27, 2021
I love this app
We have a ginormous book collection and once I put the time and effort into organizing and scanning all of them, it has been so easy to look up what we have when out. Because of sharing the database, we both can refer to it too. Super easy to use, and we'll organized. We grabbed music version as well.
Nell Ruedin on CLZ Books Mobile
Sep 15, 2021
You are the best
I could not manage my collection without. I love the option to scan a book in the store and find out if I already own it. Happened a couple of times before I converted my collection to your program.
Frank Bernhardt (USA)
Aug 30, 2021
It works!
I just got this app and I love it! It was rocky setting up some of the books I have but didn’t check my email which had a welcome note with clear instructions on how to add books! I contacted customer service with some search questions and received a nice response very quickly. It’s not an automated reply! I even deleted a different book tracking app because this one is easier to use and faster! Feature I like are seeing books I own that are marked read or not read, the ease of scanning. and the folders for categorizing! Oh and the friendly customer service! Thank you!
LisNeal on CLZ Books Mobile
Aug 10, 2021
Great book catalogue
Love working with this app. Books can be entered by scanning their barcode, so it’s a powerful bookcataloguing system that’s very quick and easy to use. I make heavy use of options that allow you to personalize the settings and stored details, so it’s tailored to my needs.
Over the 7 years that I’ve used this app, I’ve seen lots of improvements. The developers are in-tune with their customers—if we ask for new functionality, it’s actually considered and often implemented. I even had the owner email me when I had an issue!
Kxt213 on CLZ Books Mobile
Jul 29, 2021
My collection at my finger tips
Just download this app today but I truly appreciate how functional it is. Let me preface this by saying I did purchase the sub so I have both the scanning and cloud storage. I estimate that I have nearly 1000 books in my vast collection and often can forget which series I might have missing book in. Now I can keep everything at my finger tips!
Mara Jenkins on CLZ Books Mobile
Jul 6, 2021
Fantastic app
Fantastic, books are entered so quickly, and if they can't be scanned they are easy to put in.
John Ess on CLZ Books Mobile