# ZZZ Lifeline Mesh

> Social Networking

Canonical page: [https://chrome-stats.com/d/id6785456845](https://chrome-stats.com/d/id6785456845)

## Overview

- **ID:** `id6785456845`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** SMOLT STAGE, K.K.
- **Category:** Social Networking
- **Version:** 1.0.1
- **Last updated:** 2026-08-11
- **First published:** 2026-07-30
- **Size:** 45 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/zzz-lifeline-mesh/id6785456845)
- **Website:** [http://smolt-stage.com/home/en/](http://smolt-stage.com/home/en/)
- **Privacy policy:** [https://smolt-stage.com/home/privacy/zzz-lifelinemesh-privacy-policy-ios-en.html](https://smolt-stage.com/home/privacy/zzz-lifelinemesh-privacy-policy-ios-en.html)

## Description

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.

## Rankings

- #1,258,584 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6785456845)