A Compás is a flamenco metronome application. It will let you play various flamenco rhythms and change the tempo. It features a graphical visualization and some options. There is also a website version of this app, available at https://acompas.org .
Current caveat : the android app does not work with bluetooth audio. Going to https://acompas.org with the Google Chrome web browser might help in that case.
This app requires Android 7.0 at minimum.