I’d like a full-featured mobile application built in React Native with Firebase as the backend so that users with PCOS can track, understand, and improve their daily health. Core tracking • Menstrual health: an intuitive calendar that logs period dates, flow, and irregularities. • Detailed symptom logging plus daily mood tracking with quick, tap-friendly inputs. Lifestyle guidance • Meal inspiration should focus on low-carb and quick-and-easy recipes; I’ll need a browsable library with filters and the ability to save favourites. • Beginner workout plans featuring cardio and strength sessions, delivered in progressive levels with video or image cues. Daily support tools • Push notifications for medication reminders and logs, workouts, meals, and check-ins. • Simple lifestyle tips surfaced contextually to keep motivation high. Insight & sharing • Automatic pattern detection that highlights correlations between symptoms, mood, and logged habits. • A one-tap health summary (PDF or shareable link) formatted for doctors or nutritionists. Community & mindset • Secure in-app journaling with tags and mood stickers. • Realtime chatrooms or threaded discussions so users can exchange experiences and encouragement. Tech & delivery Everything should live on Firebase (Auth, Firestore, Cloud Functions, Storage, Messaging) and be written in JavaScript for maintainability. I’ll need clean, modular code, clear setup documentation, and a brief hand-over call once the build is stable. If you’ve shipped React Native health apps before—especially ones leveraging Firebase—let’s talk timelines and a sensible milestone plan.