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Mobile React Native GPS Offline-First

SAFERUN: GPS JOGGING & EMERGENCY UTILITY

Offline-first React Native fitness tracker that alerts select emergency contacts upon sudden deceleration.

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SafeRun is a safety-oriented fitness application tracking workout paths while monitoring device accelerometer data.

"If a sudden stop is registered without subsequent motion for 45 seconds, the app dispatches SMS warnings with GPS links."

Local Tracking Tech

SafeRun utilizes React Native Background Geolocation APIs. It keeps mapping records in SQLite storage, enabling complete functionality without mobile cellular service.

System Architecture

[ACCELEROMETER SCANNER & GPS MAP]
React Native background geolocation / Device Accelerometer thread
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[OFFLINE PERSISTENCE BUFFER]
Local SQLite Database (Tracking Coordinates & Streak logs)
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[EMERGENCY SMS ALERTER]
Twilio SMS Dispatch Broker / Local Native iOS-Android SMS fallbacks