My friend sent me a link showing the Bally app is launching on 3/31 and it will stream games but you have to have a streaming service with access to watch tv.
https://www.foxsports.com/south/sto...2021-braves-155-game-telecast-schedule-031721
Great info, but that doesn't appear to be the Bally's stand-alone app - whichever streaming or cable service has to have FSSO or FSSE for that to help.
As of now Bally's/Sinclair hasn't yet reached any agreement with YTTV/Hulu/etc., so you still have to get your TV from a cable or streaming system that has an agreement with them for the rebranded app to do you any good.