Having a hand pan app is an awesome thing however in this case the recommendation to wear headphones sets one up for a disappointment with the digital click with each touch. There is also a minute latency when playing, I would guess between 5-7 milliseconds, but just enough to hamper ones enjoyment. I have owned a couple hand pans, first a Halo, and now a harmonic and when not around my pan, I would prefer playing nothing over the instrument. I don't care at all if the background changes color(that's kind of silly), but what would be awesome and incredibly useful is if the user could change keys/pan turnings. It is a free app so I would say download it, but just don't get your hopes up that it is in any way a substitution, or honestly much more than a novelty.