This app was mentioned in 1 comment, with an average of 1.00 upvote
Yup, just created a topic about it :) https://www.reddit.com/r/heroesofthestorm/comments/36o8nb/android_app_create_your_builds_pick_your_favowned/ Direct link: https://play.google.com/store/apps/details?id=gg.companion.heroes_of_the_storm