HumShift

HumShift is a short chamber puzzle where your voice is the verb. Hum a note to raise platforms and open doors. Headphones (or a quiet room) help the pitch detector; deny the mic anytime — the on-screen pitch slider still plays every chamber.

Chapter 1 free. One-time lifetime Pro (`humshift_pro_unlock`) unlocks the remaining chambers. No ads in v1. Offline. Progress on this device. No account.

Honesty built in: pitch-driven chamber toy — not singing lessons, not karaoke scoring, not a social voice network. About covers Offline + Headphones tip.