Radar

Radar - Mesh Messenger & Peer Scanner

Radar is not just another messaging app - it's a live peer-discovery platform that works over Bluetooth, Wi-Fi, and mesh networking, even with zero signal or internet. Perfect for cruise ships, the underground, airplanes, festivals, remote areas, disasters, or any off-grid situation where infrastructure fails.

Live Radar Scanner

At the heart of Radar is a real-time animated radar sweep that scans every wireless channel simultaneously for nearby people and devices. Unlike a simple contact list, Radar actively discovers peers around you right now - no accounts required, no central server needed.

Radar scans using Bluetooth Low Energy, advertising your presence and detecting other devices within BLE range. It runs Wi-Fi Aware in parallel for direct phone-to-phone discovery with no router or internet needed - two phones in a field can find each other instantly. It also sweeps your local Wi-Fi network and relays through a configurable internet server when needed.
Every discovered device appears as a blip on the radar screen. Tap any blip for a detail card - name, photo, device type, IP/MAC address, discovery channel, and estimated distance - then chat, view their profile, map them, or block them in one tap.

Mesh Messaging & Voice - Every Channel, One Inbox

Radar's messaging engine automatically routes each message over the best available path - Bluetooth LE, Wi-Fi Aware, local network, or internet relay - switching channels transparently if one goes down. Every Radar-to-Radar message is end-to-end encrypted by default, and strict guard mode can prevent unencrypted messages from ever being sent.

Chat one-to-one or use Group Broadcast to message multiple contacts at once. Long-press messages for reactions, pinning, copy, delete, or resend, with delivery, acknowledgement, and read receipts per message, plus instant translation into your device language.

Switch to Walkie-Talkie mode for push-to-talk voice over the mesh, or send recorded voice notes. Pair a Bluetooth speaker to turn your phone into a broadcast microphone for everyone in range. Send images, video, audio, or any file - large files are chunked for reliable mesh transfer and reassembled on arrival.

Radar also integrates SMS and MMS - read, send, and import your existing SMS inbox without switching apps. Connect to any Matrix/Element-compatible homeserver for federated rooms, media, and key management.

Contacts, Maps & Live Data Layers

Your contact list merges Radar peers with your Android address book into one searchable list. Each card shows a live compass arrow and distance to nearby peers, updated every 500 ms, with a trust badge for verified contacts saved to your Android contacts.

The built-in map plots known peer GPS positions in real time alongside indoor maps for supported venues. Layer in points of interest, hospitals, pharmacies, webcams, crowdsourced nearby photos, and business/residential phone pins you can tap to call directly.

Stay aware with live earthquake, wildfire, UK flood area, and UK Met Office weather warning overlays, plus real-time traffic incidents. Premium features unlock live aircraft and drone (Remote ID) tracking, marine vessel (AIS) positions, crime location and aggregated crime-density data, WiGLE crowdsourced Wi-Fi access point history, and UK postcode search with on-map labels.

Emergency Hub

The Emergency hub offers a distress alarm, Morse-code SOS torch flash, one-tap country-specific emergency numbers, nearby hospitals/pharmacies, and a built-in emergency broadcast radio.

Security & Privacy

Biometric lock, per-chat encryption toggles, full device identity reset with cryptographic key wipe and regeneration, scoped contact access, and transparent foreground-service notifications put you in full control.

Works entirely offline. No account required.

Open the app, point it at the world, and start discovering.