Math Chalkboard Watch Face

Math Chalkboard is an analog watch face for Wear OS drawn like a classroom chalkboard: green slate, a brass rim, gold hands, and twelve hand-written problems where the numbers should be. Solve the problem and you have the hour.

EVERY HOUR IS A PUZZLE
Each position on the dial is a different kind of math, with a little chemistry thrown in:
- Hexadecimal: 0xC
- A definite integral from 0 to 2 of 2x dx
- A derivative: d/dx (8x)
- Factorials: 5!/4!
- A logarithm: log(10^10)
- Absolute value: |-11|
- The floor of pi
- The pH of pure water
- Plus powers, a square root and an equation to solve

Behind the dial, faint half-erased formulas fill the board: the quadratic formula, the distance formula, E=mc2, PV=nRT and more.

USEFUL AT A GLANCE
- Battery percentage and step count, shown in chalk either side of the center
- Both are complication slots, so you can swap them for any data you prefer from the watch face editor
- Day and date, for example "Tue Sep 26"
- Sixty second markers and a smooth sweeping second hand

EASY ON THE BATTERY
- A dimmed always-on display on a black background
- Built with the Watch Face Format, so it runs efficiently and contains no code of its own

REQUIREMENTS
- A Wear OS watch running Wear OS 6 or later
- This is a watch-only app: install it on your watch, then long-press your current watch face and choose Math Chalkboard