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.
CLZ Comics
CLZ Movies
CLZ Games
CLZ Music
CLZ Books
Reviews from CLZ users
I was honestly surprised — and deeply impressed — by your decision to assist me through a version upgrade, especially considering that my original purchase was made more than 12 years ago.
In today’s software industry, it is rare to see such thoughtful and customer-focused support for a legacy product. Your response truly reflects the values and integrity of CLZ as a company, and I am sincerely grateful for your understanding and flexibility.
Thanks to your help, I can continue managing my music collection with peace of mind, and I truly appreciate the care you have shown in handling my case.
I do really like your app as it makes cataloguing my collection so much easier.
Wishing you a merry Christmas and a happy new year.
THX again for your help and professionalism!
Have a wonderful Christmas and a happy New Year.
Latest CLZ news
New year, new books, new New Comic Book Day!
Absolute Batman: Ark M Special #1 The origins of the enigmatic Ark M are explored! What terrible secrets lie within its walls, and just who is assigned to protect it from discovery?! Written by Scott Snyder and Frank Tieri, art by Josh Hixson and Roman Stevens.
Superman vs. The Amazing Spider-Man #1 Facsimile. Lex Luthor. Doctor Octopus. Two diabolical geniuses have joined forces to blackmail the world — and exact revenge upon their two most hated foes! With the Man of Steel and the amazing wall-crawler manipulated into battling one another, can the heroes break free and unite in time to turn the tide on their archenemies?
Once a Goblin: The Nightmare Before Christmas: The Shiver of Christmas Town #1. It all begins with the unveiling of Dr. Finkelstein’s newest creation, specially designed to be the scariest creature ever to celebrate All Hallow’s Eve. But something has gone awry in the process, and the final result is more cute and cuddly than fearsome and menacing. The disappointed scientist hands the newcomer over to Sally for safekeeping, who dubs it Shiver for its freezing breath.
Meanwhile, the Mayor has tasked Lock, Shock, and Barrel with teaching the residents of Christmas Town how to trick-or-treat, as the two realms have embarked on a new campaign to share their holiday traditions. With Christmas Town celebrating Halloween for the first time ever, the trio are taking their assignment seriously — perhaps a bit too seriously! In an effort to make their pranks extra lifelike and terrifying, they decide to “borrow” some ingredients from Dr. Finkelstein’s lab — and end up with much more than they bargained for in the form of the deceptively adorable Shiver!
Happy Reading!
A small update for the CLZ Books app, with two changes requested by users:
New: Disable the downloading of book values
In April 2025, in version 10.2, we introduced one of the biggest new features ever: the automatic downloading of book values. The feature has been requested by many users for years, so the introduction of this feature was a huge success: MOST users loved the new values!
However, a small group of users absolutely HATED the new feature. They found the values annoying, not necessary, too “commercial”, etc…
We did not see that coming…. our fault. Maybe with our years of experience as software developers, we could have expected this. Guess we were too excited about the feature ourselves 🙂
Looking back, we should have made the entire feature OPTIONAL from the start.
Of course, making it optional is still possible and that is exactly what we did for this update today. If you don’t want automatic values for your books, you can now disable downloading them via the new “Download Values” toggle in the Settings screen.
When you disable this setting, no book values will be downloaded anymore for any future books you add. On top of that it will also remove all automatic values you already have (any “My Values” you have will remain).
New: Search your database by ISBN13 or ISBN10
For all books in your database, the app normally stores the ISBN in ISBN13 notation, even for older books that original had an ISBN in ISBN10 format. However, this caused problems when searching your database using the ISBN10 notation, it would not find the book.
In today’s update, we fixed that, by including both the ISBN13 AND the ISBN10 notation in the app’s internal search index.
Searching your app by ISBN13 or ISBN10 will now find the book, no matter if you have ISBN10 or ISBN13 filled in for it.
Fixed:
- iPad only: Tap area for certain pick list fields in the Edit Book screen wasn’t correct
How to update your app to the new version:
- On your device, open the App Store app.
- Search for “CLZ” and select the CLZ Books app.
- Tap “Update” to update the app.
v10.5 Android: Smoother navigation / Disable book values / Search by ISBN10
A small update for the CLZ Books app, with two changes requested by our users and one optimization that we came up with ourselves:
Smoother navigation between folders, book list and book details
This one is for the Android users!
Our Android developer Pim was working on the app’s main screen and he saw some opportunities for improvement. Mainly to reduce slowness and stuttery behaviour when navigating back and forth between the folder list, the book list and book details page.
So instead of starting on the next new feature, we gave him a few days to refactor the code and improve existing functionality.
The result of Pim’s work is live now, in version 10.5.1 of the CLZ Books app.
We have been testing the new update quite a bit and we think it feels a lot snappier and smoother, especially noticeable on larger collections.
We hope you will notice the improvements too and that it will make you enjoy the app even more!
New: Disable the downloading of book values
In April 2025, in version 10.2, we introduced one of the biggest new features ever: the automatic downloading of book values. The feature has been requested by many users for years, so the introduction of this feature was a huge success: MOST users loved the new values!
However, a small group of users absolutely HATED the new feature. They found the values annoying, not necessary, too “commercial”, etc…
We did not see that coming…. our fault. Maybe with our years of experience as software developers, we could have expected this. Guess we were too excited about the feature ourselves 🙂
Looking back, we should have made the entire feature OPTIONAL from the start.
Of course, making it optional is still possible and that is exactly what we did for this update today. If you don’t want automatic values for your books, you can now disable downloading them via the new “Download Values” toggle in the Settings screen.
When you disable this setting, no book values will be downloaded anymore for any future books you add. On top of that it will also remove all automatic values you already have (any “My Values” you have will remain).
New: Search your database by ISBN13 or ISBN10
For all books in your database, the app normally stores the ISBN in ISBN13 notation, even for older books that original had an ISBN in ISBN10 format. However, this caused problems when searching your database using the ISBN10 notation, it would not find the book.
In today’s update, we fixed that, by including both the ISBN13 AND the ISBN10 notation in the app’s internal search index.
Searching your app by ISBN13 or ISBN10 will now find the book, no matter if you have ISBN10 or ISBN13 filled in for it.
Fixed:
- A couple of navigation issues
How to update your app to the new version:
- On your device, open the Play Store app.
- Search for “CLZ” and select the CLZ Books app.
- Tap “Update” to update the app.
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!
v10.2.2: (Android only) Smoother navigation between folders, album list and album details
This one is for the Android users!
Our Android developer Pim was working on the app’s main screen and he saw some opportunities for improvement. Mainly to reduce slowness and stuttery behaviour when navigating back and forth between the folder list, the album list and album details page.
So instead of starting on the next new feature, we gave him a few days to refactor the code and improve existing functionality.
The result of Pim’s work is live now, in version 10.2.2 of the CLZ Music app.
We have been testing the new update quite a bit and we think it feels a lot snappier and smoother, especially noticeable on larger collections.
We hope you will notice the improvements too and that it will make you enjoy the app even more!
Fixed:
- A couple of navigation issues
- Albums could show up as doubles in certain situations
How to update your app to the new version:
- On your device, open the Play Store app.
- Search for “CLZ” and select the CLZ Music app.
- Tap “Update” to update the app.
Fixed:
- A couple of navigation issues
v10.6.2: (Android only) Smoother navigation between folders, comic list and comic details
This one is for the Android users!
Our Android developer Pim was working on the app’s main screen and he saw some opportunities for improvement. Mainly to reduce slowness and stuttery behaviour when navigating back and forth between the folder list, the comic list and comic details page.
So instead of starting on the next new feature, we gave him a few days to refactor the code and improve existing functionality.
The result of Pim’s work is live now, in version 10.6.2 of the CLZ Comics app.
We have been testing the new update quite a bit and we think it feels a lot snappier and smoother, especially noticeable on larger collections.
We hope you will notice the improvements too and that it will make you enjoy the app even more!
Fixed:
- A couple of navigation issues
How to update your app to the new version:
- On your device, open the Play Store app.
- Search for “CLZ” and select the CLZ Comics app.
- Tap “Update” to update the app.