The Sandglass

The Sandglass turns your Apple Watch into a living hourglass. Thousands of sand grains fall through a curved glass neck, driven entirely by the real tilt of your wrist. Pick up your watch, tip it sideways, flip it upside down — the sand responds instantly, flowing in whichever direction gravity pulls. Spin the Digital Crown to flip the hourglass. Clockwise rotates it one way, counter-clockwise the other. Watch the grains tumble, settle, and start falling all over again. That's it. No timer. No score. Just sand. **How it works** · Tilt your wrist to redirect the flow of sand in any direction · Spin the Digital Crown clockwise or counter-clockwise to flip the hourglass · Thousands of individual grains simulated in real time using cellular automaton physics · Each grain accelerates under gravity, piles up naturally, and slides down curved walls **Designed for Apple Watch** · Runs entirely on-device — no iPhone, no internet, no account · Optimised for the Apple Watch display: 3D glass with thousands of falling grains behind it