Mayday

MaydayTalks you through a medical emergency, out loud, step by step. Congressional App Challenge 2026.

Source code

9:41

A demo. It never calls 911.

Developer only

BeatNet, live

loading the model

--/min

Waiting for the first 8 seconds.

Chest vibration simulated phone · 5-25 Hz

Beat probability BeatNet output

-6 s-3 snow

beat the model counted true beat (simulator) threshold

Simulated person

Under the phone Sensors

This run

The model

The person is simulated: chest and belly motion, a heartbeat's two vibrations, footsteps, a hand, and a phone-class sensor's noise (mobile/src/sensors/sim.ts). The model is the real one, the same TypeScript the app runs, checked against the trained PyTorch model. Experimental and lab only: Mayday never uses a heartbeat to decide anything in an emergency, the same way lay rescuers are taught not to check for a pulse.