Proof

Every other app starts you at lesson one. Proof begins with a baseline: grade 41 skills honestly, answer a few questions, and it works out the rest from how the skills depend on each other — then shows you exactly what it assumed so you can correct it.

Every session explains why it was chosen, from your own record. Disagree — too easy, too hard, no time — and tomorrow's plan changes, and tells you it changed because you said so.

Fully offline, a one-time purchase, no subscription and no ads. Your dog's record is never held hostage.