Red Days

Track your cycle privately. No accounts, no cloud, no ads — just you and your data.

Red Days is a private, offline menstrual cycle tracker designed to give you complete control over your health data. Track your period, predict your next cycle, log daily symptoms, moods, and health metrics — all without an internet connection. Your data never leaves your device.

Features: • Period tracking with cycle predictions and fertile window estimates • Daily health logging: flow level, symptoms, moods, temperature, weight, sleep, water intake, medications, and intimacy • Visual calendar with color-coded cycle phases • Cycle phase education with nutrition, exercise, and emotional wellness tips • Statistics dashboard with cycle length trends, symptom frequency, and weight/sleep charts • Compare up to 3 cycles side by side • Cycle irregularity detection and alerts • Spotting classification (period start, mid-cycle, or pre-period) • Custom symptom tracking • PDF health report generation for sharing with your doctor • Data export (JSON/CSV) and import for backups • App lock with Face ID and PIN protection • Light, dark, and system theme modes • Fully localized in 10 languages

Your privacy matters. Red Days stores everything locally on your device. No accounts, no cloud, no tracking, no ads.