Set up your teams, then run every game from here.
Size it on the day: 10 kids → 3 teams, 12–14 → 4 teams. Keep them even.
Defaults are Harry, Ron, Hermione & Dumbledore — rename to anything the kids pick.
Works fully offline. Your scores are saved on this iPad automatically,
so you can close Safari and come back mid-party.
The House Cup is awarded to