Free · Private · Works offline

Emergency Help, One Tap Away

AlertSOS is the simplest, most accessible emergency app. Trigger a loud siren, make an emergency call, and send your GPS location via WhatsApp instantly.

Download on the App Store Get it on Google Play

Free · No subscriptions · No account needed

AlertSOS home screen AlertSOS send SOS to contacts AlertSOS settings AlertSOS languages
Works offline No data on our servers 100% free
Features

Everything you need in an emergency

Powerful when it matters, simple enough for everyone.

Instant SOS Alarm

One tap activates a powerful siren at full volume.

Emergency Call

Calls your pre-configured emergency number directly.

WhatsApp Location

Sends your real-time GPS coordinates to up to 5 contacts.

Shake to Activate

Shake your phone to trigger the alarm hands-free.

Home Screen Widget

Place SOS buttons on your home screen for instant access.

10 Alarm Sounds

Choose from 10 different siren sounds.

How it works

Ready in under a minute

No account, no setup headaches, no monthly fees.

1

Download & open

Get AlertSOS free from the App Store or Google Play.

2

Set it up in seconds

Add your emergency number and up to 5 WhatsApp contacts.

3

Tap SOS when it matters

One tap sounds the siren, calls for help and shares your location.

Your safety, your data — private by design

AlertSOS runs entirely on your device. We have no servers holding your data — your emergency number, contacts and location never leave your phone unless you send them.

Read our Privacy Policy