One front office for every league you run.

Sideline connects your MyFantasyLeague, Sleeper, and ESPN leagues in a single local-first iOS app. Bring your own FantasyPros and Odds API keys for supplemental data, or rely on the built-in Sharp feed for player props — all of it feeds an AI front office that recommends lineup, waiver, and trade moves. Nothing writes back to your league until you approve it.