Hey everyone!
I just released a new ear training app for android that uses vexflow:
https://play.google.com/store/apps/details?id=com.franciscop.francisco.eargym
features include: interval and chords reading, identification, construction, singing, inversions, comparison. Analysis, cadences, key signature identification, perfect pitch training, clef reading etc..
let me know what you think and if you like it, you can always give a good review:)
best regards