It’s locked to playing 16th notes, but the tempo and number of steps can be changed. The pattern can also be transposed. Finally, it comes with a random pattern creation system, for creating that ‘dead batteries in a 303’ style sequence.
The top right window displays the pitches for the steps, selectable between -12 and +12 semitones. The center right window the velocity (where 0 means no note is played). The bottom window shows the currently playing step.
An audio demo is available at the site.