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)
Mar 3, 2026
Outstanding customer service
I love this app! Cant thank u enough. Love the interface and the outstanding customer service much appreciated.
nighthawk (USA)
Feb 26, 2026
Customer support
Super helpful and quick to reply, sorted my problem perfectly.
LadyBarham (United Kingdom)
Feb 24, 2026
That was quick
I had a problem with syncing, or so I thought, but the problem was me. I contacted CLZ support and they came back within 20 minutes. That was quick, thank you support.
Mike Spencer (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)

Latest CLZ news

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CLZ Comics Mobile

Week 12: Most wanted comics

Mar 16, 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 Games Web

New: Add your own YouTube trailer links

Mar 16, 2026

A handy update for CLZ Games Web! YouTube trailers for games typically come straight from our Core database, but now you can replace the standard Core YouTube trailer with a trailer of your own choice, or add one if we Core didn’t provide one.

Just paste any YouTube URL into your the YouTube trailer link section (Edit Game, then click the Links tab) and CLZ Games Web automatically grabs the thumbnail image and video description for you.

Add as many as you like per game, then drag them into your preferred order.

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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.