On the title screen: click to start. On the main screen: Click 'Tempo' to set your tempo. Click 'Metronome' to make a note every beat (depending on your tempo.)
A simple music app. At the moment you can only set the tempo or use a metronome, but it is planned to eventually allow you to create full songs by typing in the note to play and dragging the note on the grid. Main account: @meowscratchcat