I find myself playing this app instead of Ruzzle or WWF.

I find it is really helping my ear and the sequence of the modules is excellent. I breezed through the first 3 stages and now stage 4 is really stretching my ear which is awesome. Each module builds from the previous one.

Make sure to read the blurb before each stage because it is helpful.

Ms Vidie about Ear Training by Musicopoulos