Offline-First Communication

Offline-First Emergency Messaging App
Beyond Bluetooth range while the online service is reachable. Direct Bluetooth when networks fail.

Message your loved ones with end-to-end encryption and hold voice and video calls over the internet. When internet and towers go down, the same app keeps sending messages, voice notes, and location to nearby people.

For families, volunteers, and first responders

Not a dispatch service. Contact official emergency services first when available.

Voice & Video Calls
E2E Encrypted
Works Even Without Internet
Direct Bluetooth
Get AppGet Ready
While you're online

A messaging app you'll use every day.

Crisis Connect isn't only for the moment of disaster. While the online service is reachable, you can message loved ones beyond Bluetooth range with end-to-end encryption and hold voice or video calls. When the network goes down, the same app keeps working nearby over Bluetooth.

End-to-end encrypted messaging

Find Crisis Connect users from phone contacts after both numbers are verified; while the online service is reachable, messages and voice notes travel end-to-end encrypted beyond Bluetooth range.

Voice and video calls

Clear one-to-one voice and video over the internet, adapting to your connection quality.

Voice notes, photos, and files

Not just text — your voice notes, photos, and files are end-to-end encrypted too.

SOS reaches teams online too

With internet, your help signal and location land on authorized response panels.

When internet disappears, the app uses the direct Bluetooth path. Continue with existing contacts, add someone nearby by QR, or use Nearby after both phone numbers were verified earlier.

Before a crisis

Set up the offline path before you need it.

Preparing and testing ahead is recommended, not required. Once the app is on both phones, first launch, QR contact exchange, and nearby messaging work with no live internet.

Quick offline setup

No account needed for core offline messaging

4 simple checksDone once, ready later
App

Open it once

Once the app is on the phone, first launch and local setup work without internet. Downloading it from an app store still requires store access.

People

Add trusted contacts

With both phones nearby, scan QR codes without an account, phone verification, SIM, Wi-Fi, or cellular service.

Access

Allow nearby communication

Enable Bluetooth, nearby devices, and notifications so messages are not blocked later.

Check

Send one nearby message

Try one short offline message together. You learn what works before it becomes urgent.

Your Safety Companion

No Signal? Keep Communicating.

When internet and cellular service are down, your phone still works as a local communication tool.

22:58
Alex Turner

Messages

Trusted contacts and SOS chats, all in one place.

Recent

Everything else, sorted by latest activity

2
Who it is for

One local-radio foundation, three different jobs.

The site now separates the promise by audience: families, volunteers, and professional teams use the same app with different expectations.

01

Families

Add trusted people by QR before or during an outage and reach them nearby over Bluetooth. While the online service is reachable, verified phone numbers also enable contact-directory discovery and communication beyond Bluetooth range.

02

Volunteers

Keep short-range coordination alive in a neighborhood, camp, or field group: who is safe, who needs help, and where people are.

03

Teams and agencies

Authorized responder flows support role proof, dashboards, and controlled expansion modes for field coordination.

Know the limits

Resilient communication is not a rescue guarantee.

Emergency software earns trust by stating its boundaries. Crisis Connect adds a communication path when infrastructure is gone; phones, battery, environment, and nearby devices still decide the outcome.

Range depends on the environment

Open air can reach farther; walls, rubble, crowds, and phone models can shorten the link significantly.

Preparation helps, but is not required

QR pairing can create a trusted contact locally during an outage. Testing beforehand simply makes an urgent situation easier.

It does not replace rescue services

SOS and location sharing can help nearby teams notice you; they do not replace emergency calls or local instructions.

The phone has to be on

If a device is powered off or in airplane mode, it cannot send or receive. The link forms only between phones that are reachable.

When Infrastructure Fails

Three simple situations where Crisis Connect helps most.

Search and rescue team working in earthquake rubble

Search & Rescue

Nearby rescue teams can spot the help signal and start talking to the person.

Collapsed infrastructure after disaster

Earthquake Response

When towers and power go down, nearby teams can still stay in touch.

Remote mountain wilderness area

Remote & Wild

For groups in the wild or off the grid.

Frequently Asked Questions

Clear answers about setup, offline use, safety, and privacy.

Yes. You can create the local profile and add a nearby person by QR without internet, an account, phone verification, or a SIM. Keep Bluetooth on, grant the requested nearby-device permissions, stay close together, and grant camera access on the scanning phone.

View all questions →

Reach Family and Rescue Teams Nearby

Even without internet or signal, you can message trusted people nearby and send a help signal to rescue teams.

Direct Bluetooth links help family and rescue teams reach you faster.
Above Ground

Field Team

Rescue Unit

Strong Signal Receiving Signal

Field Medic

First Responder

Good Signal Receiving Signal
Affected Area
Your Location

YOU

You

Sending Signal
CONNECTED
Direct Bluetooth Connection
✓

FAMILY

Saved Contact

Direct Bluetooth links help family and rescue teams reach you faster.

Family & Saved Contacts

Talk to an existing nearby contact or add someone beside you by QR with zero internet.

Direct ConnectionTrusted ContactsSecure Link

Help & Rescue Teams

Send a help signal so nearby teams can notice you and reply.

SOS SignalLocation SharingTwo-Way Comm
Without a network both flows run on Bluetooth; with internet, your help signal also reaches authorized response panels
Evidence and verification

You can check the claims before trusting them.

Secure, verified, and open source should not just be slogans. The relevant proof paths are now visible.

Public release

Android and iOS store links

The download page points to the public release and QR links people can actually install.

Download page
Technical basis

Bluetooth, encryption, and limits

The technical page separates the default direct Bluetooth path, the internet layer, authorized mesh extensions, trust model, and pilot posture.

Technical architecture
Open source

The code is open for review

The mobile client and protocol decisions can be inspected on GitHub; the claims are not just marketing copy.

GitHub repository
Honest scope

Controlled pilot and open gates

For institutional use, the technical architecture calls out what is available, under review, or still pending.

Read the scope
Ready when you are

We are connecting liveswhen it matters most.

Join the network that saves lives. Whether you are an organization or an individual, be part of the resilient future.

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Crisis Connect — Offline-First Emergency Messaging App