Vials: ASMR Sand Sort Puzzle

A quiet ASMR sand-sorting puzzle. Pour coloured sand between hourglass-shaped vessels until each one holds a single colour. No timers, no fail state, no pressure — the pleasure is the pour itself: a hand-tuned animation and layered sand audio. 1000 levels with a difficulty curve calibrated by an offline solver, so it stays gentle for a long time and then quietly gets interesting. Live on the App Store and Google Play.