Easily fixed
Essentially this sounds lovely and the variable tunings are great. But the app is incredibly basic and rather clumsy at dealing with note offs. The sound is chopped too quickly, this should happen over a few ms to stop the clicking, this is worst on the iPad sustain notes, which also should have a volume balance. Terrific instrument and there's potential in the app, however it always gets me angry when developers release virtually identical apps, see red koto, instead of developing the one I bought, it feels a bit naughty. That looses another star for me. Can sound delightful but needs a polish!