Life Signal - Offline SOS Mesh
bigame soft
Life Signal is a vital emergency network utility designed to function during earthquakes, floods, landslides, forest fires, or cellular blackouts without any internet or cellular network. Using Bluetooth and Wi-Fi Direct, it establishes a decentralized offline mesh network between nearby devices to route your emergency requests to search-and-rescue teams.
WHY CHOOSE LIFE SIGNAL APP?
• No Internet or Cellular Connection Required: Works fully offline without mobile data (GSM), SMS, satellite connection, or Wi-Fi.
• Multi-Hop (Mesh) Data Transmission: Your emergency messages and status jump from device to device like stepping stones, reaching distant locations and rescue teams.
• Critical Battery Preservation (Blackbox Mode): When device battery drops below 5%, the device automatically transmits your last known GPS coordinates and status to nearby nodes and optimizes broadcast for maximum energy savings.
KEY FEATURES AND EMERGENCY TOOLS:
• Offline Mesh SOS Broadcast: Distribute your health and safety status ("I am Safe", "Injured", "Trapped", or "Need Logistics") to nearby devices and rescue boards without internet.
• Acoustic Audio Beacon: High-frequency periodic siren loop designed to help search-and-rescue teams locate you using directional microphones.
• Morse Flashlight SOS: Synchronizes your camera flash to pulse the international SOS Morse code signal to stand out visually in dark ruins.
• Real-Time Earthquake Alerts: Follow recent earthquake activities globally with custom magnitude, depth, and region filters (automatically updates when internet is available).
• Cached Offline Maps: View designated assembly points, safe zones, and reported hazards on pre-cached maps even when there is no internet connection.
• Family Safety List: Monitor the last known status, coordinates, and battery level of your family circle offline via the local mesh network.
• Shake to SOS: Activate the emergency broadcast in panic situations by simply shaking the phone instead of searching for buttons.
HOW DOES OFFLINE MESH WORK?
The app connects directly peer-to-peer with other Life Signal users nearby. Each device acts as a router. Your distress signal is transmitted to a nearby phone, which automatically relays it to other devices in its range. This chain reaction carries your signal for kilometers until it reaches an internet-connected gateway or a rescue worker.
EMERGENCY GUIDE:
1. When Shaking Starts: Drop, Cover, and Hold on. Stay away from windows and elevators.
2. After the Shaking Stops: Open the Life Signal app immediately and update your emergency status.
3. If Trapped: Activate the "Audio Beacon" (Acoustic SOS) and keep the phone in Morse strobe mode. Avoid checking the phone constantly to preserve battery.
PRE-DISASTER CHECKLIST:
1. Cache Offline Maps: Go to settings and download your local city map.
2. Establish Family Circle: Connect with your family members via Bluetooth.
3. Grant Permissions: Approve Location, Bluetooth, and Camera permissions in advance.
PRIVACY & SECURITY:
Life Signal is built on decentralized architecture. No central servers are used; your coordinates, health profiles, and blood types remain encrypted on your device and are only shared via the offline local mesh network during an active emergency.
WHY CHOOSE LIFE SIGNAL APP?
• No Internet or Cellular Connection Required: Works fully offline without mobile data (GSM), SMS, satellite connection, or Wi-Fi.
• Multi-Hop (Mesh) Data Transmission: Your emergency messages and status jump from device to device like stepping stones, reaching distant locations and rescue teams.
• Critical Battery Preservation (Blackbox Mode): When device battery drops below 5%, the device automatically transmits your last known GPS coordinates and status to nearby nodes and optimizes broadcast for maximum energy savings.
KEY FEATURES AND EMERGENCY TOOLS:
• Offline Mesh SOS Broadcast: Distribute your health and safety status ("I am Safe", "Injured", "Trapped", or "Need Logistics") to nearby devices and rescue boards without internet.
• Acoustic Audio Beacon: High-frequency periodic siren loop designed to help search-and-rescue teams locate you using directional microphones.
• Morse Flashlight SOS: Synchronizes your camera flash to pulse the international SOS Morse code signal to stand out visually in dark ruins.
• Real-Time Earthquake Alerts: Follow recent earthquake activities globally with custom magnitude, depth, and region filters (automatically updates when internet is available).
• Cached Offline Maps: View designated assembly points, safe zones, and reported hazards on pre-cached maps even when there is no internet connection.
• Family Safety List: Monitor the last known status, coordinates, and battery level of your family circle offline via the local mesh network.
• Shake to SOS: Activate the emergency broadcast in panic situations by simply shaking the phone instead of searching for buttons.
HOW DOES OFFLINE MESH WORK?
The app connects directly peer-to-peer with other Life Signal users nearby. Each device acts as a router. Your distress signal is transmitted to a nearby phone, which automatically relays it to other devices in its range. This chain reaction carries your signal for kilometers until it reaches an internet-connected gateway or a rescue worker.
EMERGENCY GUIDE:
1. When Shaking Starts: Drop, Cover, and Hold on. Stay away from windows and elevators.
2. After the Shaking Stops: Open the Life Signal app immediately and update your emergency status.
3. If Trapped: Activate the "Audio Beacon" (Acoustic SOS) and keep the phone in Morse strobe mode. Avoid checking the phone constantly to preserve battery.
PRE-DISASTER CHECKLIST:
1. Cache Offline Maps: Go to settings and download your local city map.
2. Establish Family Circle: Connect with your family members via Bluetooth.
3. Grant Permissions: Approve Location, Bluetooth, and Camera permissions in advance.
PRIVACY & SECURITY:
Life Signal is built on decentralized architecture. No central servers are used; your coordinates, health profiles, and blood types remain encrypted on your device and are only shared via the offline local mesh network during an active emergency.
Developer email
bigamesoftapps@gmail.com
Developer website
https://sinemaoyunfilmeglence.blogspot.com/Released
Apr 20, 2026
Current version
1.0.93
Android version
7.0
Screenshots
