Bondhukoi
“Where are my friends on campus?” — answered without ever storing raw GPS.
The problem
Location sharing apps usually keep a trail of exactly where you've been. Bondhukoi only needs to know which campus zone you're in — so that's all it keeps.
What I built
- React Native (Expo) client with a Fastify API
- Supabase + PostGIS for spatial data
- Server-side geofencing with point-in-polygon checks
- Privacy by design: raw GPS coordinates are never stored
Outcome
- Working demo on YouTube
- Circles with custom polygon boundaries and a live campus presence view
Screens
Bondhukoi Campus Pulse screen: friends and active circles at North South University 
Bondhukoi Circles screen: a private circle with a green geofence polygon on the map 
Bondhukoi Create Circle screen: invite friends, university group and custom boundary options
Stack
- Expo
- Fastify
- Supabase
- PostGIS