Oleksandr Kotyuk is an Android developer that has been active since 2013. The current app portfolio contains 40 apps. In the Google rankings, Oleksandr Kotyuk's apps appear in the top 100 in more than 10 countries. A popular app is Православный календарь
, which is highly ranked in at least one country and, with over 500 thousand installs, is one of the more popular apps in the Android ecosystem.