Welcome to CLZ!

CLZ is THE collection database software!

Easily catalog your comics, movies, video games, music or books.

Work on your phone or computer and sync data between them.

Reviews from CLZ users

Dec 10, 2024
Where Has This Been All My Life
OMG! For a few bucks a year this app does more than I ever dreamed! I used DVD Profiler, which died, and being cheap I really didn't want to pay for an app, but CLZ Movies gives you soooo much for so little! It’s as though it becomes your own, personal IMDb! Thank YOU!
Cookee59 (USA) on CLZ Movies Mobile
Dec 10, 2024
Great customer service
Great customer service and outstanding job fixing the IT issue! This is why I keep spreading the word about all the CLZ apps!
C.J. (USA)
Nov 28, 2024
The best customer service in the world!
You guys are the best customer service in the world! I love all your apps and of course still use Books, Movies and will soon use the LP/CDs apps as soon as I have to time start adding my music to the apps!
Roger (USA)
Nov 27, 2024
To the rescue
Many thanks for the re-set. Everything seems to be working fine now.
I must stress how much I always appreciate the speed and efficiency with which you and Sytske come to the rescue. It really does matter!
Graham (United Kingdom)
Nov 21, 2024
Enjoy this software
I enjoy this software and it really helps when I see things on sale in stores to be able to check and see if I already own it.
Alan (USA)
Nov 15, 2024
Excellent database
CLZ Music is an excellent database, but I shouldn't be surprised. I also have CLZ Movies and CLZ Books which are excellent databases for my films and books respectively. All of them get regularly saved to a cloud so if the worst happens and I can't open the CLZ version, I can go to the cloud and build another from there. If not, contact them for help which is helpful and will soon have you up and running again. I would say I have used these databases for more than 15 years now.
Karen Denmark
Nov 11, 2024
The Best Out there!
CLZ continues to produce winning apps, this one is no exception. Hands down the best way to keep organized and avoid duplicating a movie. Super easy to use to locate, add, or adjust your collection. Next up…action figures?
I’m so glad to be connected to the company and also it’s worth noting they are VERY responsive to the collecting community…they truly care!
Russ1850 (USA)
Nov 7, 2024
My libraries organized
Thanks for making such programs, they really help keep music, movies and book libraries organized.
Errol Hunt (USA)
Oct 24, 2024
Amazing
Really appreciate your amazing customer service.
Maryann C. (United Kingdom)
Oct 20, 2024
5 stars!
Great app. Very helpful and great support. This is the premier way to track and value your collection.
Donald Riley
Oct 18, 2024
High level of customer service
I wanted to thank you very much for the credit you have issued to me and the clarification of what I should be purchasing in the future. If all companies had the same high level of customer service as Collectorz we would be a lot better off.
Larry F. (USA)

Latest CLZ news

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CLZ Comics Mobile

v10.1: Check Comic Values by scanning covers!

Dec 14, 2024

A week ago, we released the huge v10.0 update for CLZ Comics, in which we introduced a new super easy (and super fun!) way to add comics:

Add Comics by just scanning the cover!: Take a picture of the cover and the app will instantly show you matching covers from our CLZ Core online database. Tap the one you want to add it. Quick, easy and fun.

Today, in version 10.1, we’re taking the next step, by bringing the cover scanning feature to your Check Value screen!

Read more


A week ago, we released a huge v10.0 update for CLZ Comics, in which we introduced a new super easy (and super fun!) way to add comics:
Just scan the cover!
Take a picture of the cover and the app will instantly show you matching covers from our CLZ Core online database. Tap the one you want to add it. Quick, easy and fun.

However… after the v10 launch, we immediately starting getting the request:

“Can you please add the cover scanning in the Check Value screen too?”

Of course, we saw this one coming from a mile away 🙂
In fact, we had originally planned to include that in v10.0 right away. We later decided to postpone, so that we could launch the cover scanning for adding comics released ASAP.

But we are now ready to make that next step:

Read more


Lots of great comics on display for this week’s edition of New Comic Book Day!

Let’s kick off with Marvel’s The Incredible Hulk #20 in which we see the grumpy green giant battle the lord of the Werewolves himself, Vârcolac. I bet this issue will have you howling for more!

Next we follow Batman’s early career in #1 of the new series Batman: Dark Patterns, published by DC Comics. We watch as he joins up with commissioner Gordon in order to try to solve several dreadful murders. What kind of evil is at work in Gotham?

And finally, in order to hopefully escape the scariness surrounding us, we dive into the Christmas-themed Creepshow Holiday Special 2024, published by Image Comics. Christmas is the time of giving, of loving one another and singing jolly Merry Christmas songs together. So let’s just stay inside, were it’s comfy and safe, and try to ignore the scary monsters that are surrounding our house.

Happy Reading!

BTW: how do you like the HUGE CLZ Comics 10.0 update?
You can now add comics by simply taking a picture of the cover!!!
Check out some screenshot and a demo video here.

Also see v10.0.2: New “Type Barcode” sub-tab in Add Comics screen
A small update to the Adding by Barcode section of the Add Comics screen. Under the “Barcode” tab, there now are two sub-tabs: Scan Barcode & Type Barcode.
Read all about the V10.02 update

Read more

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CLZ Comics Mobile

[Android] v10.0.3: Fixed barcode scanner

Dec 10, 2024

Some Android users were reporting problems with the barcode scannner, as in that it wasn’t scanning barcodes at all. We’ve been investigating and gathering reports from users through a Facebook post that we set up and learned that the problem happened on some specific devices only.

Read more

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CLZ Comics Mobile

NCBD: Most wanted comics for week 50

Dec 09, 2024

These top-10s are created by you all, the users of the CLZ app and software, as they’re based on how often these comics already appear on your wish lists in the CLZ Cloud, even before release!

Read more


A small update to the Adding by Barcode section of the Add Comics screen. Under the “Barcode” tab, there now are now two sub-tabs

  • Scan Barcode: scan barcodes using your device camera
  • Type Barcode: type barcodes or use external scanner

Basically, the ability to manually type in barcodes has been moved to its own sub-tab. This way, you can do manual entry of multiple barcodes in a row, without having to tap the keyboard icon each time to pop up the entry screen.

Another advantage of the new set-up is that it now fully supports scanning barcodes with an external USB or bluetooth scanner!


It’s the most wonderful time of the year, New Comic Book Day is here!

Let’s kick off with an all-new Venom in #1 of the very originally titled new Marvel series All-New Venom! The BIG question in this action-packed issue of course is, WHO exactly is hiding under the mask??

More mysteries await us in Dynamite Entertainment’s Thundercats: Apex and it appears this action-packed one-shot has all the ingredients for a wild-west themed adventure! We have the desolate desert landscape, the mysterious stranger ánd plenty of bandits for Apex to defeat!

Last but not least we join Robin, Zatanna and Agios Nikolaus AKA the one and only Santa Claus for a cosy gathering at the Wintersgate Manor. Their mission? Finding the missing Justice League… and eating and drinking as much as possible of course, judging from that beautiful Bernard Chang regular cover. You can read it ALL in #2 of Batman / Santa Claus: Silent Knight Returns.

Happy Reading!

BTW: how do you like today’s HUGE CLZ Comics 10.0 update?
You can now add comics by simply taking a picture of the cover!!!
Check out some screenshot and a demo video here.

Read more

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CLZ Comics Mobile

v10.0: Add Comics by scanning the cover!

Dec 04, 2024

Version 10.0 is here, with one HUGE new feature:
Add Comics by just scanning the cover!

No need to scan barcodes, no need to search by series title.
Just take a picture of your book and the app will recognize it!

Read more

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CLZ Comics Mobile

NCBD: Most wanted comics for week 49

Dec 02, 2024

These top-10s are created by you all, the users of the CLZ app and software, as they’re based on how often these comics already appear on your wish lists in the CLZ Cloud, even before release!

Read more


Closing in on the end of a productive year! This is CLZ Alwin, with the CLZ News for November 2024.

Big updates all over the place. The huge v10.0 update for the CLZ Books mobile app is live now (read ISBNs with OCR!). An even bigger v10.0 for CLZ Comics Mobile is coming up very soon now (add comics by scanning the cover!).

On the CLZ Web front, a long running project is getting closer to release. All 5 CLZ Web editions are getting a completely make-over for their Add screens, with the biggest impact on the game and movie editions.

The CLZ News for November 2024:

  • Now live:
    • CLZ Books 10.0: Read ISBN numbers with OCR
  • Coming up:
    • Coming soon, CLZ Comics v10.0 : Add Comics by scanning the cover
    • Coming soon: big updates for the Add screens of all CLZ Web editions
  • CLZ Core updates:
    • Core for Movies: “Check Covers” project, 86% cloud coverage!
    • Core for Comics: New Comic Book Day summary, 2,107 new releases

Read more