It took me a few downloads and trials to finally figure out that the Ringer and Volume had to be turned on/up independent of the external volume...but after that I was very impressed with the quality of the steelpan sounds/samples...especially in the lower tones (bass pans). The drum roll button is not consistant as others stated. Overall, I think its the best steelpan/steeldrum App out there. Its #1 especially beacause of the access to different pans and excellent tones.
JC Pan about #1 STEELPAN APP