This is not, as one reviewer said, a "simple sine wave oscillator", it allows additive synthesis of 12 oscillators. While it may not match the authentic sound of a harmonium, it is in fact very cool. I agree that the sliders are a bit hard to control (it got easier when I found I could tap on the location I want it to go to, rather than trying to drag the button). My other complaint is that the help text is way too small to read; the zoom gesture did make the text larger, but then it was too hard to scroll. Im only going to 4 stars because it is totally lacking in modulation options.
steve_1963 about SrutiBox