SOS Alerter

Privacy-focused emergency app with SMS location tracking and silent recording.GPL-3.0-or-later

PrepApp (F-Droid)

Preparedness toolkit, survival guide, emergency info, weather and more.MIT

FOSS Warn

Receive emergency alerts worldwideGPL-3.0-only

SOS Flashlight: Advanced Morse Code Tool

Turn your phone into a Morse code device, to transmit emergency messages.GPL-3.0-only

Wasted

Lock a device and wipe its data on emergencyGPL-3.0-only

FirTube

FirTube — browser based on Android webView for watching YouTube.Unlicense

Offenbach App

The official citizen app of the city of Offenbach am MainEUPL-1.2

Survival Manual

Learn how to surviveGPL-3.0-only

Ente Locker

Store & share important documents privately, and pass them on in emergencies.AGPL-3.0-only

DisasterRadio

GPL-3.0-only

Call Limiter

Limit call duration per contact and automatically hang up when time is upGPL-3.0-only

Red Screen

Show a red screenMIT

Priority Alerts

Informs you when receiving SMS matches with configured keywordsGPL-3.0-only

Child Resus Calc

Get tube size, defibrillation energy & drug doses for Paed. Life Support & RSIGPL-3.0-or-later

MoldQueen

Drive Mould King building-block RC toys over BluetoothMIT

Oksigenia SOS

Smart safety and distress alerts with fall and inactivity detection.GPL-3.0-only

Tideo Auto Brightness

A glass-box replacement for Android's adaptive brightnessMIT

Keep Alive

Notify others if you haven't used your device in a given period of timeApache-2.0

Keep Alive Lite

Notify others if you haven't used your device in a given period of timeApache-2.0

Seguime

Follow where your device goes without being followedGPL-3.0-or-later