Stash hides controls in the dead space at your screen’s edges and corners: drag a corner to spin a volume or brightness dial, or slide a hidden strip for a Dock overflow — and because it fires real trackpad haptics as you turn, it feels like a physical knob under your fingers rather than a slider on glass. It’s a rethink of where a Mac keeps its quick adjustments, moving them into muscle memory instead of a menu. A 24-hour trial, then a $6.99 lifetime unlock.