This comes straight from Flare Gun’s own GitHub page, and it’s free. Need help installing?
What it looks like
About this app
Flare Gun sends and picks up distress signals directly between nearby phones, so a group can find each other in a disaster with no working network.
It is built for emergencies and works entirely offline.
From the app’s home page
- See the codeHow it’s made, every line is public
- Questions & commentsTalk with the people who make it
- Report a problemTell the makers something is broken
- All versionsOlder downloads and what changed
- LicenseThe rules for using and sharing it
More like this
Oksigenia SOS
Send your GPS location by text when you're in trouble outdoors
StreetComplete
Improve the world map by answering easy questions
Trail Sense
Turns your phone's sensors into survival tools
Meshtastic
Text your friends with no phone signal at all
Compass
A simple, beautiful compass
Metrodroid
Read your travel card with your phone