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 18, 2026
I love the app!
The app makes "vinyl nights" great. I pass my phone to my guests & let them choose the next record to spin. A LOT easier than going through the bins of albums I have :)
Thank you for your excellent customer service. It is rare, & I appreciate your attention.
cbj (Canada) on CLZ Music Mobile
Mar 26, 2026
Top-notch
That did the trick! Thank you so much. Don't know what I'd do without this app. It's gold. And customer service is always top-notch.
Todd T. (USA)
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 7, 2026
So good!!
Literally couldn’t live without this app! Incredible inventory. The development and support is second to none. This app makes collecting fun and I have never bought a double since using it!
That alone is worth it. LOVE IT!!!!
HomJommery (Australia)
Mar 7, 2026
Best comic app
I absolutely love this app. I’ve had it over two years and it’s amazing. I can keep track of my massive collection and sort through it in numerous ways. The best part is how responsive their team is for support issues. Whether you contact them on Facebook, or through their forum support, they’re just so quick to respond. The savings alone on not buying duplicates makes it absolutely worth the annual fee.
dapakalolo (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)

Latest CLZ news


Yeah baby, it’s new comic book day! Here are a few books that were hand picked by our content managers:

Batman / Superman: World’s Finest, Vol. 2 #50D

Bizarro Year None #1D

Eternals 50th Anniversary Special 1B

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 Movies Mobile

v10.3: Faster down-syncing from CLZ Cloud

Apr 01, 2026

No new features here, but an important improvement to an existing one: the CLZ Cloud syncing. Our mobile developers Pim and Bernard have implemented three changes that will make the down-syncing of new items from the CLZ Cloud to your app a LOT faster!

  1. The syncing now down-syncs the *data* first, while queuing the *image* downloads. This will make the data sync super fast.
  2. Downloading the images is much quicker too, especially on fast connections, as it downloads multiple images at the same time.
  3. As soon as the data download has completed, you can close the Sync screen and start using the app. The image downloads will continue at the bottom of the main screen, prioritising images that are “in view”.

The improvement in speed will be most noticeable when re-downloading your complete CLZ Cloud database, e.g.

  • After installing the app on a new device
  • After removing and re-installing the app
  • After Clearing the Database

However, even during normal use, e.g. when syncing between devices, or between the app and the CLZ Web software, you will find the down-syncing to be much faster than before.

Fixed for Android:

  • Pre-fill: Watched now has a “Watched/Not Watched” toggle
  • Edit screen: New big blue “Mark as Watched” button on the Personal tab for unwatched movies
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CLZ Books Mobile

v10.7: Faster down-syncing from CLZ Cloud

Apr 01, 2026

No new features here, but an important improvement to an existing one: the CLZ Cloud syncing. Our mobile developers Pim and Bernard have implemented three changes that will make the down-syncing of new items from the CLZ Cloud to your app a LOT faster!

  1. The syncing now down-syncs the *data* first, while queuing the *image* downloads. This will make the data sync super fast.
  2. Downloading the images is much quicker too, especially on fast connections, as it downloads multiple images at the same time.
  3. As soon as the data download has completed, you can close the Sync screen and start using the app. The image downloads will continue at the bottom of the main screen, prioritising images that are “in view”.

The improvement in speed will be most noticeable when re-downloading your complete CLZ Cloud database, e.g.

  • After installing the app on a new device
  • After removing and re-installing the app
  • After Clearing the Database

However, even during normal use, e.g. when syncing between devices, or between the app and the CLZ Web software, you will find the down-syncing to be much faster than before.

Fixed for Android

  • Setting to enable Subject downloads wasn’t working correctly
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CLZ Comics Mobile

New in CLZ Comics: the Fake Shake Detector!

Apr 01, 2026

The Shake feature is a popular gimmick of the CLZ Comics app: just shake your phone to make it show a random comic from your collection.

This cool tool has even resulted in a recurring trend in the “CLZ Comics” group on Facebook: The Shake of the Day
Members shake their phone and post a screenshot of the random comic that appears, marking it with the #shakeoftheday hashtag. It’s a fun way to show interesting comics from your collection that you would not have picked yourself.

However… it has come to our attention that some members of this group are being, let’s say, “less than honest” with their shakes!

Read more

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CLZ Music Mobile

v10.3.2: Fix for custom covers

Apr 01, 2026

Fixed:

  • Sync: Custom covers weren’t downloaded

This is Alwin, from CLZ, bringing you our monthly news for March 2026. Most of the dev team is caught up in big undertakings at the moment, so that means very few updates this month.

Mobile developers Pim and Bernard are implementing the huge Custom Fields feature for the mobile app. Web developer Joe is adding the ability to add more images for the CLZ Web software. Web developer Michiel is “making more things clickable” in the CLZ Web details panels (I’ll explain below, under What’s Cooking).

Finally… lead developer Sven is doing early research into some cool feature ideas we have. Yeah, I know, that is even more vague, but it’s all I can say at the moment. Will tell you more once I know more!

So for today, two updates and a long What’s Cooking section:

  • CLZ mobile apps: Faster down syncing from CLZ Cloud
  • CLZ Games Web: Add your own YouTube trailer links
  • What’s cooking?
    • CLZ Games mobile app: Add your own YouTube trailer links
    • CLZ Web: Making more things “clickable”
    • CLZ Web: Add more images to your entries (next to front and back)
    • CLZ mobile apps: Create (and Sync!!) your own Custom Fields

Read more

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CLZ Comics Mobile

Week 14: Most wanted comics

Mar 30, 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 Mobile

v10.3: Faster down-syncing from CLZ Cloud

Mar 30, 2026

No new features here, but an important improvement to an existing one: the CLZ Cloud syncing. Our mobile developers Pim and Bernard have implemented three changes that will make the down-syncing of new items from the CLZ Cloud to your app a LOT faster!

  1. The syncing now down-syncs the *data* first, while queuing the *image* downloads. This will make the data sync super fast.
  2. Downloading the images is much quicker too, especially on fast connections, as it downloads multiple images at the same time.
  3. As soon as the data download has completed, you can close the Sync screen and start using the app. The image downloads will continue at the bottom of the main screen, prioritising images that are “in view”.

Read more

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CLZ Music Mobile

v10.3: Faster down-syncing from CLZ Cloud

Mar 30, 2026

No new features here, but an important improvement to an existing one: the CLZ Cloud syncing. Our mobile developers Pim and Bernard have implemented three changes that will make the down-syncing of new items from the CLZ Cloud to your app a LOT faster!

  1. The syncing now down-syncs the *data* first, while queuing the *image* downloads. This will make the data sync super fast.
  2. Downloading the images is much quicker too, especially on fast connections, as it downloads multiple images at the same time.
  3. As soon as the data download has completed, you can close the Sync screen and start using the app. The image downloads will continue at the bottom of the main screen, prioritising images that are “in view”.

Read more

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CLZ Comics Mobile

April Catalog now in Core!

Mar 28, 2026


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

  • Mighty Morphin Power Rangers, Vol. 3 (Boom! Studios)
  • Spider-Man: Long Way Home
  • Gun Honey: Doubles Down
  • …and much more!

In total, we counted around 1,700 new entries for this month!
They are now all available to add to your “On Order” list in the CLZ Comics app.