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

Mar 9, 2026
A Wonder Worker
Before coming across CLZ Books, my collection was kind of ‘By guess and by golly.’ I am now able to locate any book in my collection and have it in hand within a minute. It allows me to build and work with collections (topic, author, copyright dates, etc.) The price is not excessive and the control it gives one are well worth it.
For someone who is more ‘techy’ than I am, it offers even more opportunities. It has an app for connecting with other users, and they have regular updates by email for a variety of uses.
Give me choices! (USA) on CLZ Books Mobile
Mar 10, 2026
Great product support!
Huge thanks! That answers ALL of my questions. Great product support! Thanks again for the quick response!
James W. (USA)
Feb 19, 2026
Excellent Customer Support
Ran into an issue and sent in a request for help via their online help site. Athan-Jon de Jager responded back promptly and quickly took interest in the issue I was having. After sifting through and a few recommendations, he discovered the issue and replied back with a fix. Thank you guys. You’re the type of dev team I want to support! Keep up the great work!
Teknoman3 (USA)
Feb 19, 2026
Super!
We love this app, it does what it promises and has a super customer service.
Charlottemage (Netherlands)
Feb 10, 2026
Best Music App Ever!
I‘m using this fantastic app since more than 4 years and I am happy having a wonderful overview about my Vinyl and CD collection with more than two thousand items. I am also very satisfied with the great support by the CLZ team in case of developing new features and replying questions in great quality. Prize/Quality is absolutely top!!! I highly recommend this app!!!
golthuis (Germany)
Feb 7, 2026
Superior customer service
I have been using Collectorz products for several years. They constantly improve their products and provide superior customer service. Highly recommended! 10 years on I am still a completely satisfied customer!
Brian J Munro (Canada)
Feb 1, 2026
User support
The support I’ve gotten from CLZ is great. I haven’t had many problems, but the few I’ve had they’ve helped quickly, with easy solutions.
Good people doing good business here - highly recommend.
TheFreelanceTeacher (USA)
Jan 27, 2026
Excellent!
Thank you so much for your support. My experience with this app has been out of this world. I’ve been searching for something like this to help me with my collection.
Adam L. (Canada)
Jan 27, 2026
Support
Great app and support is great!
David Liban (USA)
Jan 19, 2026
Thank you so much for your assistance
CLZ has been so easy to use and this is the first time I have had any problem and couldn’t be happier with the outstanding customer service. My issue was addressed quickly and clearly.
Jodi (Australia)
Jan 19, 2026
Excellent customer service
I'm writing to let you know that I genuinely appreciate the excellent customer service.
Matt F. (USA)

Latest CLZ news

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CLZ Books Mobile

v10.6.4: Fixed “Last Read” sorting problem

Mar 13, 2026

Fixed:

  • Sorting on “Last Read” (still) didn’t work correctly (and wasn’t displayed correctly)
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CLZ Movies Mobile

v10.2.6: Various bug fixes

Mar 12, 2026

Fixed:

  • Pre-fill: Watched now has a “Watched/Not Watched” toggle
  • Edit: Personal: New big blue “Mark as Watched” button on the Personal tab for unwatched movies
  • Edit: Links: Tapping next/previous movie while waiting for link description could crash the app
  • Trailers weren’t downloaded for the separate entries when adding a box set
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CLZ Games Mobile

v10.2.5: Various bug fixes

Mar 12, 2026

Fixed:

  • Edit Game: Links tab: Tapping next/previous game when waiting for link description could crash the app
  • iPad: Edit Game: Tab titles weren’t always shown in full
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CLZ Music Mobile

v10.2.4: Various bug fixes

Mar 12, 2026

Fixed:

  • Renamed “Listened” to “Played”
  • Edit: Personal: New big blue “Mark as Played” button on the Personal tab for unplayed albums
  • Edit: Links: Tapping next/previous album while waiting for link description could crash the app
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CLZ Books Mobile

v10.6.3: Various bug fixes

Mar 12, 2026

Fixed:

  • Details panel: Data in the “Read” field wasn’t always displayed correctly
  • Sorting on “Last Read” didn’t work correctly (and wasn’t displayed correctly)

Isn’t any week great to be a comic book fan? Two events going on at the moment, Death Spiral started at the end of February. This week Reign of the Superboys takes off from DC. Any big expectations? Here are a few books that were hand picked by our content managers:

Usagi Yojimbo: Kaito ’84 #1. This story takes you to 1984 in Osaka which gives you a heist story with a descendant of Usagi Yojimbo thrown in there. Jared Cullum’s watercolor art compliments to story very well. Definite NCBD pick up for CLZ Taco.

Has the green orc hype caught up to him? Probably.. CLZ Rowdy’s pick for this week is D’Orc #2, especially the B cover by Riley Rossmo. We really enjoyed issue 1, so we can’t wait to give this one a read!

Imperial Guardians #1. Cosmic Ghost Rider is back! Along with a crew this time around. Darkhawk, Amadeus Cho, Captain Marvel and Gamora? Sign me up! From what was teased this is Suicide Squad in space ordered by the Inhuman Maximus to fight against the Kree. Written by Dan Abnett and art by Marcelo Ferreira, Jay Leisten % Rachelle Rosenberg.

All comics releasing this week can be found in the NCBD tab in your add comics screen. All new releases have been carefully cleaned up, with lots of info added! Be sure to check them out in the app when you hit your comic shop or when you’re back home adding your stack you’ve just come home with!

Happy reading!

Read more

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CLZ Comics Mobile

Week 11: Most wanted comics

Mar 09, 2026

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

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CLZ Comics Mobile

March Catalog

Mar 05, 2026


Our content managers have worked hard to get all the new titles from the March catalogs into Core.
Some noteworthy new titles include:

  • Absolute Green Arrow #1
  • Red Sonja: She-Devil with a Sword #1
  • BRZRKR: Light Draws Breath #1
  • …and much more!

In total, we counted around 1,500 new entries for this month!
They are now all available to add to your “On Order” list in the CLZ Comics app.


Tons of books out this week! Lots of later printings for both Marvel and DC’s most populair titles. Some beautiful covers and great stories to be read. Here are a few books that were hand picked by our content managers:

Daredevil and Punisher fight to protect New York City! Will their tentative alliance survive this ordeal, or will the final battle be with each other? Daredevil / Punisher: The Devil’s Trigger #5. The Peach Momoko variant is an instant buy for me!

This was a total cover buy for me. The KyuYong Eom variant for Batgirl #17, is a killer cover! Start of a new story arc titled “The Curse of the Blood” which spins directly out of the DC K.O. event.

Star Wars: Shadow of Maul #1. Are you hyped yet for Star Wars: Maul – Shadow Lord? I sure am! Janix, a neon-lit, shadow-soaked maze of a planet that lies beyond the reach of the Empire. Captain Brander Lawson crossing paths with a looming threat of the shadow lord, Maul. This is my pick for this week, hope this amps up the excitement for you too.

All comics releasing this week can be found in the NCBD tab in your add comics screen. All new releases have been carefully cleaned up, with lots of info added! Be sure to check them out in the app when you hit your comic shop or when you’re back home adding your stack you’ve just come home with!

Happy reading!

Read more

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CLZ Comics Mobile

Week 10: Most wanted comics

Mar 02, 2026

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