Responsive, but some weird quirks
The app itself is responsive, and latency is low enough that it's very usable as a MIDI controller. But why do the drum pads only ascend in whole steps? For anyone chopping samples or using drum VSTs, this makes the two pad instruments half useless. If we had the option of using half steps, this app would easily be 4-5 stars. As it is, it's only worth a fraction of what it costs.