Rebuttal is a debate practice app for iPhone and iPad. You argue a motion, an AI opponent argues the other side, and a neutral AI judge scores you both on a 25-point classroom rubric — with a grade on every individual turn.
Three ways to play
- Pass & Play
- Two debaters, one phone. Pass it back and forth; the AI only judges.
- vs AI
- Four difficulty tiers, from a beginner to an opponent that backs every claim with evidence. Earns a practice rating that stays on your device.
- Versus
- Online play against real people — friends you've added, or an open challenge posted by anyone. Rated with the Elo system chess uses.
Built for a classroom
- Every speech has its own clock, the way a real round works.
- The judge explains its scoring and grades each turn, so a debate is something to learn from rather than a number.
- Playing on your own needs no account and no personal details at all.
- Online play is friends-first: nobody can challenge you until you've accepted them.
Not released yet
Rebuttal is in development and is not yet available on the App Store. This page exists so the app's privacy policy and contact details are public, as the App Store requires.
Contact
Questions, privacy requests, and reports of abuse or of an account belonging to a child under 13: