The nearest defibrillator,even where there’s no signal
Cardiac arrest doesn’t wait for a connection. SOS DAE keeps the map inside your phone: it opens in two seconds and works on a plane, in a car park, up a mountain.
549,681defibrillators on one map, even offline
Free · No sign-up · The database ships inside the app
Duomo, Milano
La tua posizione· distanze in linea d'aria
DAE più vicini
10Il più vicino
Stazione Duomo
OpenStreetMap
62m
Galleria Vittorio Emanuele
OpenStreetMap
140m
- 62 m
- nearest to you
- Offline
- no connection needed
- 3 confirmations
- before a point becomes official
- 46 languages
- and the local emergency number
Built on open data and recognised guidelines
Why it matters
The problem, in three numbers
The defibrillators are out there. The trouble is that often nobody knows where, and public data is full of gaps we counted one by one.
- ~10%
- lower chance of survival for every minute that passes without defibrillationERC guidelines
- 147,046
- AEDs in the global public dataset with no verification date: nobody knows if they’re still thereOpenStreetMap, our analysis
- 37,851
- AEDs with no name, no address and no indication of where they are: once you arrive, you can’t find themOpenStreetMap, our analysis
The product
What SOS DAE is
Two things in one: a free emergency tool for anyone, and a paid service for organisations that own defibrillators.
Works with no connection
Over 500,000 defibrillators live inside the app, not on a server. On a plane, in a basement, on a trail: map, distances and guidance behave exactly the same with zero bars.
Guides you while help is on the way
A call to the emergency number of the country you’re in, a 110 bpm metronome for compressions, hand placement, what to do when the AED arrives. ERC and AHA guidelines.
Corrected by whoever walks past
An empty cabinet or a locked door is reported in one tap. When several people say the same thing, the correction reaches everyone’s app.
In practice
How it works
Four steps, and none of them needs a connection.
Download the app
The defibrillator database is already inside: nothing to download and nothing to configure on first launch.
Open it and see the nearest one
Distance and direction, large, on the first screen. One tap starts walking navigation.
Follow the guidance while you wait
A call to the emergency number of the country you’re in, a metronome for compressions, what to do when the defibrillator arrives.
If you’re on site, fix the data
Confirm the AED is there, or report that the cabinet is empty. When several independent people agree, the correction reaches everyone else.
Training
Learn beforehand, so you don’t have to learn while it happens
Inside the app there’s a first-aid course in sixteen modules. It isn’t an extra: it’s the part that works during the months when the defibrillator is no use to anyone.
16
modules, all offline
A refresher every month
A reminder comes back once a month and reopens the course where you left it. That’s the difference between having read something once and remembering it under adrenaline. One tap turns it off if you don’t want it.
Read aloud
Every lesson can be read out by the phone’s system voice: listen while you walk or drive, and follow along on screen when you’d rather. No videos to download.
From CPR to evacuation
CPR and AED, choking, recovery position, bleeding, burns, trauma, stroke, heart attack, seizures, allergic reactions, poisoning, venomous bites, heat and cold, drowning, fire extinguisher, evacuation.
The course lives inside the app and works with no connection, like everything else. The texts are plain-language summaries written on the ERC guidelines: they help you act, they don’t replace a certified course or a medical device.
No signal
If the line drops, the app doesn’t notice
The defibrillators are written into the phone’s memory: search, distances and guidance never call a server. All that comes over the network is the map background, and without it you still find the AED.
- Signal
- No bars
- App works the same
How many there are
Every dot is a defibrillator someone put on the map
They come from OpenStreetMap and OpenAEDMap. We recount them before every update and ship them inside the app: the same list you carry in your pocket, with nothing to ask the network for.
549,681
defibrillators on one map, even offline
The drawing is indicative. The real points are in the app.
- 100%
- works offline
- 0
- data needed to find an AED
Who it’s for
Who needs it
Three different people, the same tool in their pocket.
Anyone facing a cardiac arrest
Not a responder, no training, the emergency line on speaker and shaking hands. They will use the app once in their life, and they must understand where to run in under two seconds.
Volunteers, schools, sports clubs
People who check the map calmly, to know where the AEDs in their area are, verify them on site and fix what doesn’t add up.
Companies, gyms, councils, institutions
Anyone who owns a defibrillator and has to keep it ready: pad and battery expiry, periodic checks, liability. That’s what the management service is for.
SOS DAE Management
Do you have a defibrillator to look after?
An installed AED is not a ready AED. Pads and batteries expire, checks have to be logged, and the responsibility stays with whoever owns it. SOS DAE Management keeps it all in one place.
Reports from the field
When someone reports that your cabinet is empty or blocked, you know. It’s the same report the community files in the app, delivered to you.
Your AEDs on the public map
The devices you manage show up to anyone looking for a defibrillator, with data you know is right because you keep it current.
Expiry dates and maintenance
Pads, batteries, periodic checks. Every device with its own dates, and a warning before they expire — not after.
Alerts to the right person
The alert reaches whoever has to act, not a shared inbox nobody reads.
Sites and devices
Several sites, several devices, who is responsible for what. With the right permissions for each person.
Tasks to do
What’s due, what’s overdue, what was done and by whom. A log that stands up to an audit.
SOS DAE Management
- 3
- Devices
- 2
- Due soon
- 1
- Reports
Upcoming expiry dates
- DAE 01PadsExpired
- DAE 02Battery12 days
- DAE 03PadsUp to date
Questions
Frequently asked questions
Does it really work without a connection?
Yes, and that’s why it exists. Database, search, distances and CPR guidance are inside the app: the only thing that comes over the network is the map background.
How much does it cost?
Nothing: the app is free, with no account and no ads, and it will stay that way. Only the management service for companies and institutions is paid.
Where does the data come from?
From OpenStreetMap, under the ODbL licence. It is not official data — the app says so on every card — and anyone on site can correct it: that’s how it improves.
How do I add an AED that isn’t on the map?
From the app, standing in front of the defibrillator: GPS takes the position within 60 metres, nothing is typed in. First, though, you need to have finished the training and unlocked two AEDs — a point that lands on everyone’s map has to be recognised for what it is.
When does a reported AED become official?
When three different people confirm it on site: until then it stays “to be verified”, and the map shows it that way. If denials exceed confirmations by two, the point disappears: deleting costs more than adding, because an AED that is there but hard to find is the most common mistake.
What happens to people who report AEDs that don’t exist?
Three rejected proposals in 90 days and the account can no longer publish: seven days the first time, thirty the second, ninety from the third on. When it expires the account writes again on its own, but with a low weight: its reports count for little until others confirm them.
Is it a medical device?
No. It does not replace emergency services and does not give medical advice. In an emergency the first thing to do is call your country’s emergency number.
Download it now, not when you need it
At the moment it matters, nobody has time to look for an app, wait for a download and work out how it functions.
Free · No sign-up · The database ships inside the app