How It Works

Five steps from something you noticed to somebody else avoiding it.

How it works

From something you spotted to somebody else avoiding it.

Five steps. No sign-up wall, no waiting for the news to catch up — just people telling the people behind them what is ahead.

4Warning
01

See it

A user sees something others should know about. A phone snatcher working a junction, a car being broken into, a hazard in the road — the kind of thing that stops with you unless there is a simple way to pass it on.

02

Share it

Create a warning through 4Warning. Choose what you saw and where it happened. It takes seconds, and you do not need followers or a long description for it to be useful to somebody walking that way.

03

Warn people nearby

The warning becomes available to relevant users nearby. Not broadcast to the whole country and not buried in a feed — it goes to the people whose route is about to take them past the thing you just reported.

04

Your bubble moves

Your half-mile radius moves with your current location. Walk, drive or cycle and the circle travels with you, so what counts as relevant keeps updating against where you actually are right now.

05

Receive an alert

When you move within approximately half a mile of a relevant warning, 4Warning may alert you. Before you reach it, while there is still time to change direction, avoid the area, or simply be more aware.

Download 4Warning

Free on iPhone and Android.

SEE IT. SHARE IT. AVOID IT.

Free on iPhone and Android. Take a few seconds to warn the people behind you.

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Download 4Warning

Be aware. Warn others. Become part of the community. 4Warning is free on iPhone and Android — see it, share it, avoid it.