Megrim: Migraine Diary

Smart migraine tracking that stays on your device. Megrim is an open-source, offline-first migraine diary that helps you find your personal triggers. The app automatically adds time-of-day, season, daylight, and moon context to your entries — and, if you opt in, local weather and barometric pressure — calculating correlations entirely on your device. With no accounts, no cloud servers, and zero tracking, your health data stays completely private and under your control. What's inside: • Automatic on-device enrichment — daylight hours, time of day, season, and moon phase computed locally; opt in to add local weather and barometric-pressure change (24h/48h). No manual entry. • Real personal analytics — trends by day-of-week, time-of-day, season, daylight, pressure change, and moon phase, plus a "suspected factors" card that uses odds ratios over your own log. • Your data stays yours —…