I've always thought of running a public wifi access point, but all traffic would be tunnelled through TOR to keep me pretty safe. I know a lot of sites break t

I've always thought of running a public wifi access point, but all traffic would be tunnelled through TOR to keep me pretty safe. I know a lot of sites break themselves over TOR, but I've always wondered just how much would break or still work, e.g. mobile phone apps. Would iMessage work? WhatsApp? Youtube? Uber? How about a TOR app? Can you run TOR over TOR?