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CLZ Books - library organizer icon
GOOGLE PLAY

CLZ Books - library organizer

CLZ · Books & Reference · Germany store
NOT IN TOP 100 HERE
View on Google Play ↗ App Store version →
Revenue a month, worldwide EST
$5.3K
Likely $1.8K to $16K
▲ 178.1% in 21 days
New ratings
Tracking
Daily counts start building from today
Rating
4.3 of 5
3.8K ratings in this store
Countries it ranks in
1
was 0 on Oct 15, 2026

Revenue

Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / MONTH · WORLDWIDE · BOTH STORES
$5.3K
Range $1.8K to $16K
EST. REVENUE / YEAR · WORLDWIDE
$63.9K
Both stores combined. Small app estimate, so no split per store
LIFETIME INSTALLS (GOOGLE)
176.8K
About 927 per month on average since launch
WHERE IT EARNS · EST. / MONTH
  • United Kingdom #83 Books & Reference (Play)$2.3K · 42%
  • Italy #64 Books (iOS)$1.5K · 29%
  • Norway #48 Books (iOS)$896 · 17%
  • Belgium #44 Books (iOS)$415 · 8%
  • Chile #73 Books (iOS)$81 · 2%
  • Romania #81 Books (iOS)$78 · 1%
  • Portugal #96 Books (iOS)$61 · 1%
HOW SURE ARE WE
Small app: combines its grossing ranks with ratings growth (7.6 new ratings a month on average since launch). Tested on 418 apps with verified revenue: typically off by about 2.4 times, so the range is wide. Countries we don't track (and Google Play in China, which doesn't exist) aren't included, and neither are ads or web payments. Gross revenue before store fees.
RATINGS
3.8K
AVG RATING
4.27
PRICE
Free
IN APP PURCHASES
€1.19 - €19.99 if billed through Play
CONTAINS ADS
No
LAST UPDATE
10d ago
RELEASED
Dec 6, 2010
CONTENT RATING
USK: All ages

Last 29 days

From our daily snapshots of every grossing chart.

DAYS IN A GROSSING CHART
4 / 29
COUNTRIES NOW
1 (was 0)
EST. REVENUE A MONTH, DAILY · BOTH STORES EST
Show daily values
Sep 24, 2026not in a grossing chart
Sep 25, 2026not in a grossing chart
Sep 26, 2026not in a grossing chart
Sep 27, 2026not in a grossing chart
Sep 28, 2026not in a grossing chart
Sep 29, 2026not in a grossing chart
Sep 30, 2026$14.6K a month
Oct 1, 2026$13.2K a month
Oct 2, 2026not in a grossing chart
Oct 3, 2026not in a grossing chart
Oct 4, 2026not in a grossing chart
Oct 5, 2026not in a grossing chart
Oct 6, 2026not in a grossing chart
Oct 7, 2026not in a grossing chart
Oct 8, 2026not in a grossing chart
Oct 9, 2026not in a grossing chart
Oct 10, 2026not in a grossing chart
Oct 11, 2026not in a grossing chart
Oct 12, 2026not in a grossing chart
Oct 13, 2026not in a grossing chart
Oct 14, 2026not in a grossing chart
Oct 15, 2026not in a grossing chart
Oct 16, 2026not in a grossing chart
Oct 17, 2026not in a grossing chart
Oct 18, 2026not in a grossing chart
Oct 19, 2026not in a grossing chart
Oct 20, 2026not in a grossing chart
Oct 21, 2026$40.7K a month
Oct 22, 2026not in a grossing chart
The same estimate as the headline, saved every day. Best rank Sep 24, 2026: not ranked. Now: #81 Books & Reference · GB.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
€1.19 - €19.99 if billed through Play
Google Play only shows the price range per item.
REVIEW MOMENTUM
1.7 reviews / week
  • Trendsteady
  • Recent reviews average4.6 stars
  • Recent 1 and 2 star share10%
From the latest 500 written reviews, covering 2037 days. The store only returns this many, so this is the most recent slice.
RATING BREAKDOWN
3.7K ratings
5★69%
4★16%
3★3%
2★2%
1★10%

What users say

Latest reviews, Germany Google Play.

★★★★★Oct 19, 2026

Simple to use this app. Easy to scan very efficient and reliable. The developers did great job and very helpful.

★★★★★Oct 11, 2026

Love this app. Keeps a great catalog of all my books and allows me to quickly search what books I own. The only thing keeping me from scoring it a 5 star is that i wish the app had an AI scanning function that could scan the front cover of a book and catalog it that way. I have several older books that don't have barcodes or ISBN numbers so it makes it hard to log those. Other than that, great app.

★★★★★Oct 9, 2026

while it does cost $, it isnt a lot, BUT, I wish the app and web services were covered by the same membership

★★★★★Oct 4, 2026

This app has made it so easy to catalogue my library. It has already saved me far more than its subscription cost by allowing me to quickly and easily check my collection to see if I already have the volume I am considering purchasing. Only wish I had found it sooner.. I highly recommend it.

★★★★★Sep 28, 2026

The team of developers are always at work improving and refining the functionality of the app. It's a very robust book catalogue app.

★★★★★Sep 27, 2026

while this app may be good for others, it immediately sets a bad tone when you start the app and it says "youve got no books in your library, click here to add some" and when you do click on the add button, it takes you to the page where theyre asking you to pay to subscribe to the app. just, no. let me experience the app first before asking me to subscribe.

Apps like this

Same category, earning about as much.

Store screenshots

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App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

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Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title or short description.

clz17book10books8clz core6author title6core6database6etc6collection5author5online5date5search clz5details4title4isbn4keep4software4book collection3book details3cover art3title clz3clz books3scan isbn3

What's new in 11.2.2

New: * Edit screen: My Images: Tap and hold to save them to your camera roll Fixed: * After searching and tapping a folder, going back would clear the search * Edit screen: empty value fields now show as empty instead of 0.00 * More layout fixes for foldable devices

Store description

Easily catalog your book collection. Automatic book details, cover art and estimated values. Just scan ISBNs (barcode or text) or search our CLZ Core database by author and title. CLZ Books is a paid subscription app, costing US $1.99 per month or US $19.99 per year. Use the free 7-day trial to try all of the app's features and online services! == 2 easy ways to add books: == 1. Search our CLZ Core by ISBN: You can either scan ISBN barcodes or scan the ISBN numbers using OCR Guaranteed 98% success rate on ISBN lookups! 2. Search our CLZ Core by author and title Our CLZ Core online book database automatically provides cover images and full book details, like author, title, publisher, publication date, plot, genres, subjects, estimated pricing, etc.. == Edit all fields == Modify all automatically provided details from Core, like Authors, Titles, Publishers, Publications Dates, Plot descriptions, etc.. you can even upload your own cover art (front and back!). Add personal details like condition, location, purchase date / price / store, notes, etc.. Create your own Custom Fields so that you can catalog information for which the app does not have a built-in data field. == Create multiple collections == Collections will appear as Excel-like tabs at the bottom of your screen. E.g. for different people, to separate your physical books from your ebooks, to keep track of books you sold or have for sale, etc... == Fully customizable == Browse your book catalog as a list with small thumbnails or as cards with big images. Sort any way you want, e.g. by author, title, publication date, date added etc.. Group your books into folders by author, publisher, genre, subject, location, etc... == CLZ Cloud storage == Sync your data to the CLZ Cloud, to: * Always have an online backup of your book organizer database. * Sync your book library between multiple devices * View and share your book collection online == Got a question or need help? == We are always ready to help or to answer your questions, 7 days a week. Just use "Contact Support" or "CLZ Club forum" from the menu. == About CLZ == CLZ has been developing collection database software since 1996. Located in Amsterdam, the Netherlands, the CLZ team now consists of 12 guys and one gal. We're always working to bring you regular updates for the apps and software, and to keep our Core online databases up-to-date with all weekly releases. Our other CLZ apps: * CLZ Movies, for cataloging your DVDs, Blu-rays and 4K UHDs * CLZ Music, for creating a database of your CDs and vinyl records * CLZ Comics, for your collection of US comic books. * CLZ Games, for creating a database of your video game collection == What our users say == "A fantastically nice book library app that I am incredibly happy with, you really get an overview of the things that need to be sorted out, for a good overview, easy to use and everything works seamlessly. Strongly recommend." Emmanate (Norway) "The best I have found. I have over 1200 books and have used a number of book cataloging apps over the years. CLZ Books does the job of keeping track of my library and gets syncing right. Most importantly (speaking as a software developer) they keep improving the app. It’s tough to make a business of niche software products. These folks have apparently figured out how to make a go of it and they keep improving. Kudos to them!" LEK2 (USA)

See this store page in another country

Prices, ranks and reviews are per country. Revenue above is already worldwide.

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