Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
About
ZZZ Lifeline Mesh is a serverless, offline BLE mesh communication tool for disasters. Even when cell towers and networks are down, nearby devices connect directly over Bluetooth and relay (mesh) messages to one another. Features: - SOS and safety ("I'm OK") beacons: broadcast to nearby devices with one tap, optionally attaching your location - One-to-one and group chat with end-to-end encryption (Ed25519 signatures + X25519 key agreement + AES-GCM) - Store-and-forward delivery: messages reach recipients later via relays even if they are out of range now - Pre-registered contacts: register family and friends in advance; they appear by name in a disaster, while unregistered nearby devices appear only as anonymous codes - Public board (broadcast) to reach nearby people you have not paired with - Multi-hop mesh relay (controlled flooding with TTL) reaches devices beyond direct Bluetooth range No internet connection, no account, and no server required. IMPORTANT: This app is a supplement to — not a replacement for — official emergency calls (110/119 in Japan) and government alerts.
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