Science O'Clock

A little wonder, every time. Explore 26 science lessons and the calculations behind your watch complication. Offline, with no account, ads or tracking.

A watch complication for people who love science.

Science O'Clock expresses the time with scientific numbers and a simple adjustment. Open the app for the mathematics immediately below the expression, then scroll into the science behind it.

A DIFFERENT WAY TO READ THE TIME Pi’s first digits can be read as 3:14. Add six minutes, and the expression represents 3:20. Follow the concise formula, with values displayed to at most five decimal places and the answer at the end.

26 LESSONS. SIX FIELDS. Explore mathematics, physics, chemistry, electrical engineering, wind engineering and astronomy. Read what each idea means, see an example, and explore the constants themselves. Choose Explore the science to browse the library, with large symbols and precise values.

MADE FOR YOUR WATCH Use a circular or rectangular complication on a compatible watch face. For a large central expression, choose the X-Large face. Science O'Clock is an app and complication, not a replacement watch face. It runs on Apple Watch without an iPhone companion app.

FOLLOW THE TIME. EXPLORE THE SCIENCE. The main calculation follows the current time, updating each minute and when you wake the app. Library pages show the scientific constants independently of the clock; worked examples stay fixed so you can read at your own pace. Choose Current expression at the bottom to return to now. watchOS manages complication refresh timing.

QUIET BY DESIGN All 26 lessons are included in the app and work offline. No account, advertising, analytics or tracking. No subscription or in-app purchases.

Requires Apple Watch with watchOS 10 or later. App lessons and interface are currently in English.

Support: https://vissee.ch/scienceoclock/support/ Privacy: https://vissee.ch/scienceoclock/privacy/