I need a straightforward yet reliable mobile app that lets every member of my family see where the others are in real time. The core build has to run natively on both iOS and Android, sharing a single code-base whenever possible (React Native, Flutter, or a similar framework is fine as long as it meets App Store and Google Play guidelines). Key features I must have • Real-time location updates shown on a map with minimal battery drain • Customisable geofencing alerts (enter/exit) that trigger push notifications • 30-day location history per user, viewable on demand • Secure sign-in with email or phone OTP, plus end-to-end encryption for all location data • Simple in-app toggle to pause sharing Deliverables 1. Source code, well-commented and version-controlled 2. Two ready-to-publish builds (iOS .ipa + Android .aab) 3. Lightweight backend (Firebase or similar) that stores locations, manages geofences and push tokens 4. One-page admin guide describing how to add new geofences, revoke users, and change retention limits 5. 14-day post-handover support for urgent bug fixes Acceptance criteria • Real-time latency under five seconds on 4G/Wi-Fi • Geofence alerts fired within 30 m accuracy • Successful submission to TestFlight and Google Play Internal Track, with no policy violations That’s the full scope; if something crucial for these results is missing, flag it early so we can address it before development begins.