I tried it over a year ago and have recently got back into it following my lad's willingness to thwack stuff in co-op multiplayer.
It's a MOBA. Works cross platform on IoS and Android. Fantastic touch controls. Works on phones but is a little small. Excellent graphics for the platform. They'very recently added a tutorial where you can earn free characters and a skin. 3v3 pvp. Only 1 map. Recently been signed up by Twitch for esports moments.