Some older iPhones, including mine, have issues with face recognition. KarateCombat need the ability to set a PIN code instead of being forced to use your face. KarateCombat also needs the ability to require a PIN code to unlock KarateCombat . I don’t like that KarateCombat just opens without authentication. Also, on the announcements page it would be great to see a timestamp on the pages when you look at an individual item so you know how new/old it is. I like KarateCombat a lot but it just needs some refinements. I have a really tough time placing bets and collecting my rewards because of the Face ID.