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Scan ISBN barcodes and 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

For phones/tablets

Mobile app for iOS & Android

  • Fast and slick mobile app
  • Install on multiple phones/tablets
  • All data stored on your device
  • Sync data to CLZ Cloud (optional)
  • Built-in camera barcode scanner

For computers

Web-app for Windows and macOS

  • Easy to use online software
  • Login and use from any computer
  • All data stored in the CLZ Cloud
  • Automatic updates & backups
  • Free CLZ Barry barcode scanner app

For Windows only

Download for Windows

  • For advanced Windows users only!
  • Install on one Windows PC
  • Manage your own data & image files
  • Sync data to CLZ Cloud (optional)
  • Free CLZ Barry barcode scanner app

Buy them together and get a discount

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

Use the free CLZ Cloud service to:

  • Synchronize your book database between the desktop software, mobile apps and the Connect web-app.
  • View your list online and share it with friends and family.
  • Always have an online backup of your book database.

Latest software updates

I have used the book cataloging software for many years to catalogue the many (many) books we have stored in numbered boxes and bags in our loft. I had also catalogued the books belonging to our local Embroidery group. We wanted to make full use of the group’s books during lockdown and with the superb help of the Collectorz support team, we set up a separate Library and included, on separate sheets, books belonging to members who were willing to loan them out. Until face-to-face meetings resume, we have an ad hoc doorstep delivery system in place, supported by the Loan facility within the software.
The CLZ Barry scanner enables members to scan the barcodes of books they are willing to loan and email the ISBN numbers directly from the App to our Librarian for logging. Subject to Covid restrictions, we can work directly with any member who has as many books as me, to load the books directly. It is particularly helpful to be able to sort on technique, subject etc as well as author and title.
The software works and the support team are easy to contact and really helpful. Highly recommended!
— Teresa the embroiderer on May 30, 2021

Reviews from customers

May 27, 2021
Perfect for Organizers!
I love to organize and as a homeschool mom I have nearly 1,000 books. Keeping them organized would be such a chore but this app makes it so easy! I love being able to scan the ISBN of a book to add it to my booklist. And pro tip: if you have lots of older books with no barcode, I’ve found the fastest way to enter them is to go to the keyboard for typing it in, and then click on my microphone and quickly say the numbers. Works great! — GoodHoll on CLZ Books
May 26, 2021
Works really well
This app really works. It is ez to input you data. I use the scan function. Well thought out and organized. — Peter Johnston 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 24, 2021
CLZ Fan
I’ve been using the CLZ Apps for several years. I started out with the Music Collection but soon after, I got the Books app and the Movies app. I have over 500 books in my collection and most of them added easily with the Author’s name or title. I read almost exclusively nowadays from Kindle, but I added paperback books easily with the scan function. Recently, I have been reading newer works that unknown authors self-publish on Kindle because they are a heck of a lot cheaper than top sellers list books. If they are not in the database, they are fairly easy to add to the collection with book covers and an overview of the book. It’s a great app which I use all the time as I read a couple of books a week. — GoodTimes60 on CLZ Books
May 11, 2021
CLZ Books - A Good Beginning for a Life Journey with Books
CLZ Books helps to introduce an order into a possible book chaos when you have more than few of them. The app has good visuals and presents, among others, book covers on each shelf placed front covers to a viewing user. I have still not figured out if there is an option to quickly place a photo or a scan of a book’s Table of Content, Index or Bibliography straight into the database, which would be handy. Also I do not know if there are options to export or import books from other bibliographic apps on the market. — W P Nowak on CLZ Books
May 04, 2021
Great App
As a Church Pastor I have thousands of books. Cataloging them was a challenge up to now. Along came CLZ which is an incredible app for keeping record of all my books. You have the option to add them manually or by scanning them on your device. The fact that it works on both my iPhone and iPad is a bonus.
I had some issues with trying to synchronise my books on both devices but after a few emails to the friendly and professional staff at CLZ the problem has been sorted. It’s worth the annual fee! Try it… You won’t be disappointed! — FanRev on CLZ Books
April 22, 2021
Intuitive and user-friendly
I also wanted to take a moment to thank you for creating the Book Collector software. I have an extremely large book collection that I need to downsize, and I was hoping to find a tool that would allow me to easily catalog my books so I could determine which ones to sell, which ones to bring to the used bookstore, and which ones to keep. I also wanted to capture other details about my books. I discovered your website by pure chance through a Google search, and I am so happy I did since your software does everything I wanted to do (and more)! I having been working with data for 35 years and find that most tools lack the functionality that users would like, but that is not the case with Book Collector. It is very intuitive and user-friendly, and I have been able to figure out how to do something without looking at the manual. The app is a life-saver too since I found it challenging to use my web cam to scan the ISBNs. With the app synchronization, this work is very easy.
Thanks again for the wonderful resources you have created. — Jim V. (USA) on Book Collector
March 08, 2021
Home library
I have a home library of around 350 books, and growing. It was getting to the point where I didn't know which books I owned already. I got CLZ as my home library database and have really enjoyed having it. It's super easy to scan books in or type in the ISBN, and it's easy to search as well. So when I'm at the book store I can quickly see if I already have a book or see what books I'm missing from a particular set. Definitely recommend for anyone with a large home library. — Lauren Rose on CLZ Books
February 21, 2021
Excellente application
Excellente application qui permet, grâce à la recherche en ligne, où par la saisie du code barre, de référencer et gérer tous les livres de sa bibliothèque perso, et d'éviter très simplement et rapidement l'achat de doublons en vérifiant directement dans le magasin (Soit par saisie d'une partie du titre, ou du nom de l'auteur, ou encore en scannant le code barre ) : efficace, fiable et rapide ! — Un utilisateur de Google on CLZ Books
January 13, 2021
Excellent App
With over 1000 books and an obsessive book buying personality this is my favourite app on the phone. Extensive sorting and personalisation of catalogue capability and a friendly interface. Now I won’t be buying double ups all the time. Scanning is fun and found every single one. — Aus Volpe on CLZ Books
December 21, 2020
If you have a huge book collection, this app will help!
It’s been less than one full day since I downloaded this on my phone and input about 250 of my books. The scanner/database worked for about 90% of those, and the rest were pretty easy to enter manually. I still have about 1500 books to go, but I’m already very happy with this app and will be renewing/maintaining my subscription. — corvis9 on CLZ Books
November 02, 2020
Awesome app & excellent support!
I've been using this app for about 2 months, and couldn't be happier. I'm using the app in a slightly unconventional way - not for a personal book collection, but for the school's PTO book collection. The cloud feature of the app allows me to upload all our books, for parents / students to view what's available, and the flexibility of the app allowed me to customize each record to allow for people to select books they wanted.
Populating the app was very simple by scanning ISBN barcodes, and even when a barcode wasn't available, a manual entry was very easy to do. I did do some editing of records to ensure consistency across our database, but this too was very easy. I also edited a number of cover images by adding my own - again very simple a straightforward!
I highly recommend this app. Not only is it comprehensive yet simple, it comes with a first class support team. On occasions when I have had questions, I have dealt with three different support analysts, and each has been highly responsive, knowledgeable and friendly. You can't go wrong with this app! — Paulaclaire on CLZ Books
September 29, 2020
Highly recommended
This is the fourth CLZ app I have used and they're all of equally high quality. Easy to use and constantly updated so they keep getting even better. Adding a book is simple - just type in the ISBN or title (or scan the bar code) and unless it's a really obscure book the details pop up from the huge database. Even if your collection is in the thousands this app will store them with ease and display them in any order you choose. — Bravie2001 on CLZ Books
August 20, 2020
Books in Collection
I Like the fact That I’m able to scan my Books To see How many I Have in my Collection. That way I Know What Books I Have. — Kara Phillips on CLZ Books
July 05, 2020
Superb!
So far I'm able to scan my books and list them. This app is what I need. Extensive library! I'm just getting started. — A Google user on CLZ Books
March 16, 2020
Great app with related eco-system!
Using this app, the web based Book Connect as well as the companion CLZ Barry (barcode scanning) I have documented over a 1400 books for my father’s estate. It worked fantastically well! With the collectorz software we were able to keep the books we wanted and sell the rest creating the needed lists and views of the books. Can highly recommend this app and the rest of the collectors software! For entering a bulk number of books with ISBN the CLZ Berry + web based Book Connect works best, but to quickly get an overview and find a book this app is great! — MartinViking on CLZ Books
February 29, 2020
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. — Hale.Yeah on CLZ Books
January 26, 2020
100 books in under an hour
I downloaded this app yesterday to help me scan the ISBN numbers for a ton of books I'm selling on Amazon. I managed to scan around 100 books in under an hour, upload the data to the cloud and then download the book data in CSV format which made adding products to Amazon much faster. This app is so easy to use and well designed. I'm using the free 7 day trial but I'll definitely be buying the 12 month subscription. — Tarik Davis on CLZ Books
January 21, 2020
Thank you CLZ!
I am amending my review to reflect the wonderful customer service I have received, as well as the functionality of the app. Of all the apps I tried to catalog my antique book collection, CLZ Books is my favorite. I like all the various data you can input, including reading date and price. My collection is from well before ISBN numbers (being published prior to 1900), so ease of manually inputting all of the data I want is important to me. I did try out scanning on one current book and it worked very well, but I haven't explored that side extensively. Edited to add, I just added a sci-fi/fantasy collection and used the ISBN scanner and was wowed by the plot summaries that came up! It's so fun! — RockyMtnSky on CLZ Books
December 19, 2019
Fantastic App
I bought CLZ after 15 years of using and maintaining my own custom built database. I couldn’t be happier. Perfect for cataloguing your book collection ! Has custom fields and tons of standard fields. Quickly add books to your collection by scanning bar code or entering titles/authors. Beautifully syncs with browser based and desktop app. Can’t beat it. — Rndmnknm on CLZ Books
December 03, 2019
Great tool to keep track of books!
I’ve been using Collectorz Book Collector for many years now, first on the Windows platform and then iOS as soon as the app was available. It’s very easy to add and edit on either platform (but using the app to scan barcodes is the easiest IMHO) and even easier to sync between them. This app has kept me from buying tons of duplicate books for my daughter (since I don’t read hers it’s difficult to remember all the ones she has). Technical support is also top notch. Over the years I’ve only had to contact them a handful of times but every time they’ve responded within 24 hours and had a solution for my problem, if not immediately, within a reasonable timeframe. I highly recommend this product for any book lover/collector. — MTPitPlayer on CLZ Books
November 17, 2019
Perfect voor de bibliofiel
Eenvoudig scannen, uitgebreide ISBN databank, overzichtelijke ordening, goede zoekfunctie. — xbydljgyhg on CLZ Books
November 13, 2019
Handy
Not as detailed as the PC version but very handy for the barcode scanner. — marc chenier on CLZ Books
October 31, 2019
The best book organization and book database app on Android
Scanning is easy and fast. It also retrieves the exact edition of your book so your database is accurate as possible. This is a must-have for those who have hundreds of books in their home library like me. I really appreciate that when the app shifted to a subscription-based app, early adopters like me who paid for the app still receive updates for the app. Thank you so much CLZ team! — Shane Comota on CLZ Books
October 11, 2019
DE oplossing om mijn boekenverzameling overzichtelijk te houden
Al heel lang verzamel ik pop-up boeken..Eerst wist ik nog wel welke ik al had en welke niet, maar toen ik dubbele ging kopen maakte ik in Excel een bestandje en printte dat uit en nam dat elke keer mee....aangevuld met handgeschreven informatie. Maar toen ontdekte ik Collectorz.com, echt geweldig!!!!!!
Alle boeken staan er (bijna) en nu kan ik zelfs met mijn telefoon in de winkel zien of ik een boek al heb door het isbn te scannen. Ontzettend blij ben ik er mee , het is heel gebruiksvriendelijk en jullie support is ook snel en adequaat, als het nodig is. — Anneke Eggink (Netherlands) on Book Collector
September 12, 2019
Great app, easy to use, wonderful support
I’m using this app to catalogue my collection of over 1,000 cookbooks. Scanning the ISBN numbers with my iPhone has made this task much less daunting. I can also customize my results to my way of liking. Support is immediate and knowledgeable. Highly recommend this app! — Nrupup on CLZ Books
September 04, 2019
Nette database voor boeken
Gebruik deze app zodat ik weet welke boeken ik al heb digitale en echte boeken, makkelijk invoeren met scannen van streepjescode en ook handig handmatig in te voeren, bij vragen word er snel geantwoord en hulp aangeboden, top! — pauline 1961 on CLZ Books
September 03, 2019
Tracking for my favourite authors and series
Great for tracking which books, authors, series titles you’re missing in your collection. Barcode scanning allows for things to be added quickly. All the CLZ mobile apps are great for this. — riders4ever on CLZ Books
August 12, 2019
The best
The best book database app on Android. Scanning is easy and fast. It also retrieves the exact edition of your book so your database is accurate as possible. This is a must-have for those who have hundreds of books in their home library like me. — Shane Comota on CLZ Books
August 01, 2019
Excellente application
Excellente application qui permet, grâce à la recherche en ligne, où par la saisie du code barre, de référencer et gérer tous les livres de sa bibliothèque perso, et d'éviter très simplement et rapidement l'achat de doublons en vérifiant directement dans le magasin (Soit par saisie d'une partie du titre, ou du nom de l'auteur, ou encore en scannant le code barre ) : efficace, fiable et rapide ! — Un utilisateur de Google on CLZ Books

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