Do I have to sign in to use the FYI app? No, you don't have to sign in to use the FYI app. There will always be lots to watch for viewers who don't sign in. Related articles What TV providers support the FYI app? Can I use the FYI app if my TV provider doesn't support it? Can I restrict certain programming from appearing in the FYI app? My TV Provider Is Not Listed. Why Not?