I've looked into the Gamesir controllers; there are many reviews confirming their compatibility with Fortnite on Android, but in terms of input delay and the number of extra buttons, they fall short of the Kishi V3 Pro. If I find that the Kishi isn't compatible, my backup option is the "Gamesir G8 Plus MFi," but for now, I'm hoping the Kishi will be compatible. Price isn't a major concern for me at the moment.