8Strummer is a rhythm guitar primer designed to enhance your rhythm guitar skills. It serves as a vital resource for practicing and improving rhythm patterns, focusing on strumming complexities to achieve perfect timing. Additionally, it functions as a useful songwriting tool, aiding in finding the ideal groove for your compositions.

Strumming in 8ths involves 4 down-strums on numbered beats and 4 up-strums on the 'ands', while strumming in 16ths consists of 8 down-strums on numbered beats and 'ands', paired with 8 up-strums in-between. The app offers various features such as practicing with a metronome and 27 chord shapes, saving preferred patterns, randomizing patterns with a shake, and presenting different notation types along with muted and ringing chords.