Kolb is an Android developer that has been active since 2012. The current app portfolio contains 13 apps, all of which are listed in category Music & Audio. In the Google rankings, Kolb's apps appear in the top 100 in more than 5 countries. Some important apps are Funk Brasil
, Real Drum
, Real Guitar
, Real Piano
, and Tabla
. All of them are highly ranked on Google Play and have been installed more than 10 million times.