Sahayata Setu

Sahayata Setu — help that doesn't need a signal.

When disasters strike, cell towers go down and internet access disappears right when coordination matters most. Sahayata Setu turns nearby phones into a peer-to-peer mesh network over Bluetooth and Wi-Fi, so people in need, volunteers, and coordinators can still reach each other — no SIM card, no internet connection, no central server required.

HOW IT WORKS
Your phone relays messages hop-by-hop to every other Sahayata Setu phone nearby, and those phones relay onward to theirs. A request for help can travel across a whole crowd or disaster zone one phone-hop at a time, reaching far beyond the range of any single device.

KEY FEATURES

• Offline mesh networking — Bluetooth LE and Wi-Fi, works with zero connectivity
• Emergency requests — broadcast a call for help with your location, and nearby volunteers see it instantly
• Missing-person reports — file a report with a photo and description; anyone nearby can add a sighting tip, and the reporter marks it resolved once found
• Coordinator announcements — medical camps, food distribution points, and safety alerts broadcast to everyone in range
• Volunteer coordination — see who's nearby and available to help
• Offline maps — view locations without needing a live map connection
• End-to-end encrypted — every message is signed and encrypted, so the mesh stays trustworthy even among strangers
• Runs in the background — keeps relaying for others even while you're not looking at the app

BUILT FOR THE MOMENTS THAT MATTER
Sahayata Setu ("bridge of help") is designed for disaster response, remote areas with poor coverage, and crowd events — anywhere people need to reach each other but the network can't. No account, no ads, no data leaves your phone except what you choose to broadcast to nearby devices.

Download Sahayata Setu and be ready to help — or be found — when it counts.