Great for Refining and Reinforcing
I like the game. With it, I practice intervals longer than I do in other apps. I think it works better as a tool to reinforce and refine your ability to identify intervals than as a tool to learn them from scratch. To learn from scratch it’s best to be able to take all the time you need to sing each tone and then if you still need help, to walk up or down a scale from one given tone to the other until either you land on it or you hear that it’s a half-step off the scale, or to leap from one given tone up a familiar interval then hear the small adjustment from there to the other tone, or to resolve the second tone to a nearby familiar tone. This game doesn’t give you much time to do that, so you occasionally guess wrong, and there’s nothing learned from a wrong guess. However, it’s a great tool to reinforce and refine your knowledge that you learned elsewhere. For example, if you’re always needing to sing each tone before identifying the interval, this game will kick you in the butt to get you away from that and toward trusting your initial judgment of the quality of the interval. That’s an important step! It’s also a good test of where you are with certain intervals. The player statistics and AI coach are useful.