The app shows in a clear and easy way to understand what are the notes inside the chosen scale/mode and their relative negative harmony while also representing this inside the circle of fifths with the blue axis showing the relationship between each note.
Create a simple beat & start rotating different parts to create new more interesting & less common rhythms. Once you start thinking of the beat more visually as a circle, even the complex polyrhythms start to make more sense and are easier to accomplish.