Rotating school weeks, organised across three platforms.

Screenshots

The problem
Many schools run rotating schedules: Week A and Week B, odd and even weeks. Ordinary calendar apps assume every week looks the same, so students end up re-entering the same classes or guessing which week it is.
What I did
I built the app in Flutter with Material 3. You set the rotation length and a start date, and it works out which week any date falls in. It highlights the class happening now, lets each subject have its own color, room and notes, and exports or restores the whole schedule as JSON.
The result
A working app for Windows (with an installer), Android and the web, all from one codebase. The web version is live and the code is open source under the MIT license.