PianoForge helps absolute beginners practice short piano phrases with on-device listening feedback. Place your phone near the piano, choose a beginner phrase, play, and get clear next-step guidance — including trouble-spot memory and diagnosis calibration. Offline-capable core. This is a beta for validating onboarding, physical-note verification, adaptive practice, guidance fading, transfer, retention behavior, and Trouble-Spot memory — not a claim of proven mastery.
