v1.0.0 — Initial Release

Creighton Cycle Tracker v1.0.0

Initial release of a privacy-focused PWA for tracking fertility cycles using the Creighton Model FertilityCare System (CrMS).

Features

• Daily observations — bleeding levels, mucus stretch/characteristics, frequency, peak day marking, intercourse tracking, and notes
• Auto-computed CrMS stamps — green/red/white/yellow stamps with peak day and post-peak count
• Chart view — classic 35-column Creighton chart with cycle rows and observation codes
• Calendar view — monthly grid with mini stamps
• Auto cycle and peak day detection
• Provider sharing — generate read-only share links for your FertilityCare Practitioner
• E2E encryption for synced data and share links with expiration
• Optional accounts with cross-device sync, JWT auth with session invalidation
• Export/import — JSON backup and CSV chart export
• Sample chart for new users instead of empty state
• Offline-capable PWA with service worker
• Installable on mobile/desktop, with Android APK via TWA
• SEO optimized with structured data, meta tags, robots.txt, and sitemap
• Unit tested with Vitest (stamp logic, date utils, codes)

Tech Stack

• Frontend: TypeScript, Vite, Dexie.js (IndexedDB), vite-plugin-pwa
• Backend: Express, better-sqlite3, JWT auth, bcrypt
• Hosting: Apache reverse proxy, Let's Encrypt SSL, systemd

Assets

• creighton-tracker-v1.0.0.apk (1.04 MB) — Android app via TWA