Web (https://os.starmeup.com/en/):
Products: StarMeUp, BetterMe, TakePart, OS Admin
Browsers: Chrome (last version), FireFox (last version), Internet Explorer 11, Microsoft Edge

Mobile:
All Products until September 22th, 2019
iOS 10 or later
Android 4.4 and up

All Products as of September 23th, 2019
iOS 11 or later
Android 5 and up