Appaday 133 Fasting Window Tracker

Track your fasting and eating windows on one 24 hour ring that splits cleanly across midnight. Pick 16:8, 18:6 or 20:4, start the fast, and a live countdown, streak counters, a month calendar and an editable history handle the rest. Early ends are logged without judgment. Export and import JSON.

Description excerpted from the original listing, which is linked below.