The biggest difference of the TV show versus the home game is the home game just ends whenever all the killers are found. The TV show has to reach a set number of episodes, so there are mechanisms built-in to make sure there’s always at least one traitor up to the final episode.
A separate burner seems like overkill. I’m no expert, but I think an Android service manages the push notifications and wakes up the app when it receives a notification.