For people living with heart conditions or dysautonomia

The closest hospital is not
always the right one.

Hold the button down. Your phone decides what is happening and picks a hospital equipped to treat it rather than one that is merely close. Blood type, medicines and allergies go on ahead. None of this needs a signal.

Takes two minutes. No account, and nothing is uploaded.

9:41

Good morning

Asha

Post-CABG

Emergency response

SOS

Hold to activate

Done

✓

Today complete

Recovery

6

weeks post-surgery

Health score

Improving

82

ER brief sent

City Heart Centre, 0:42

Cath lab matched

4.2 km · 11 min

Free, and run as a nonprofit. The emergency card needs no account and stays on your phone. The triage model is 94 KB and works without a signal.

How it works
Two families, the same chest pain, 7:42 on a Tuesday eveningSimulation
Without Relay+00:00

Chest pain. Panic sets in

Googling symptoms, hands shaking

Calling family. No answer

Which hospital? Nobody is sure

Ambulance dispatched. ETA 45 min

Stuck in traffic. Still waiting.

No plan yet
With Relay+00:00

SOS held. “chest pain, sweating”

Read as cardiac. Profile pulled

Heart centre picked. Cath lab free, 4.2 km

ER brief on the intake desk

Family car en route. Turn-by-turn

Arrived. Straight through triage

SOS active

This is a simulation. The timings are illustrative, not measured.

Twelve minutes with the app. Still waiting without it.

What it does

Finds a hospital that can treat it

A heart attack needs a cath lab. The closest ER may not have one, and the transfer spends the only minutes that mattered.

The ER reads your file first

Blood type, medicines and allergies, there before you are.

Your family gets the address

And the route to it, in one tap.

Two minutes a day

Enough to catch a bad week while it is still only a bad week.

How the decision gets made

0.07 ms

to sort the symptoms

on your phone, no signal

94 KB

size of the triage model

it ships inside the app

NEWS2

the score hospitals use

same inputs, same answer

61%

of cases never touch the cloud

the rest ask a cloud model

Why we built it

Most places do not
get eight minutes.

Eight minutes is the ambulance response time that wealthy cities plan around. Most of the world has never had that, and Relay was designed for those places from the start.

So it has to work on a cheap phone with no signal. Most of the design follows from that.

A paramedic can read it
without your passcode.

Two minutes to fill in. After that it sits on your lock screen and works whether or not you are awake to explain anything.

Medical profile

RA

Asha Kulkarni

Blood type

B+

Age

61

Meds

4

Critical. allergies

Penicillin · Sulfa drugs

post-CABG · metoprolol 50mg · updated today

RARelay Arc

A free emergency app for people with heart conditions and dysautonomia, run as a nonprofit.

Product

© 2026 Relay Arc

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Not a substitute for emergency services. In immediate danger, call your local emergency number.