Clepsydra

Long before ticking gears, people read the hours in falling water, drifting sand, and the slow lean of a shadow. Clepsydra is a small candlelit museum for that forgotten craft — a place to wander among sundials, water bowls, star tables, and burning-candle clocks, and to feel how differently our ancestors held a single passing hour. Its surfaces are deep and twilight-blue, lit with thin strokes of brass, so that reading it feels like leaning over an old instrument by lamplight.

Open the Chronicle to browse illustrated accounts of each device, and let the app read them aloud while you rest your eyes. Test yourself in the Trials, where a slender water-clock quietly drains as you choose your answers and a streak grows with every honest run. Turn the Sand Reckoning to sit with a real falling-sand timer that ends by unveiling one true fragment of horological history, and keep a personal cabinet of Keepsakes — your own noted curiosities, saved and edited as you please. Everything lives on your device, offline and unhurried.