William Zimmermann

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Apps: 2

Total installs: 6.6K

Latest release: Jul 10, 2026

How this developer operates

Carrier title Katav Study holds 99% of the developer's installs — a one-app developer
Hit rate 0% of launches reach 100k installs (0 of 2 at least 30 days old)
Release rhythm a new app every ~33 days on average
Maintenance 2 of 2 apps updated in the last 90 days · last update 15 days ago · updates every ~14 days

App	Style	Rating	Installs	Released
Katav Study	Education	—	5,000+	Jun 7, 2026
Katav Talks	Productivity	—	10+	Jul 10, 2026