channel
On
Route
MIDI ch
Quantize
Grid
Octave
Range
Audio stays on this device for local presets. Saving a public preset uploads its samples to the site. Trigger mode adds a performance button.
Select a dot, then press a key.
Select a dot. Previous / Next move the selection; Rest enters silence and advances. Turn on Preview only to audition piano keys, then turn it off to record. Desktop: ← / → to move, spacebar for a rest, Shift-click to preview.
No programmed notes.

Arc Study + Animator

Record: tap Record, then drag on a pad and release. In the performance loop column: tap a loop to mute/unmute it; swipe left for reverse, right for forward, up for ping-pong, or down to delete it.
Position the animation, then enable to keep it aligned as the window resizes.
Arc Stroke
Each anim uses speed (units/sec). Sliders show start values only. Presets save both slider values and the animation rack.