Thanks for the tip about keyboard shortcuts. But it looks like there are only shortcuts for diatonic intervals. What about when I'm in chromatic scale mode, and I need to differentiate between e.g. major and minor intervals?

I would like to see an option in interval identification where, rather than successive pairs of notes, you're given a continuous stream of single notes, and for every new note you have to identify the interval between it and the previous note. This would be better training for 'intervallic hearing'—...