khazan — Offline Chat & SOS
Everyone
info
1+
Downloads
About this app
khazan — offline chat for workers and teams in places with no network coverage: tanks, tunnels, construction sites, warehouses, basements and remote areas.
HOW IT WORKS
Open the app and it automatically finds nearby coworkers over Bluetooth within seconds — no internet, no cellular network, no account, no phone number. Messages hop from phone to phone (mesh networking) to cover areas far beyond normal Bluetooth range.
WHAT YOU CAN SEND
- Text messages with delivery and read receipts
- Photos from camera or gallery
- Voice notes and push-to-talk walkie-talkie
- Your location — only when you choose to share it
- An urgent ring alert to a specific coworker
SOS DISTRESS CALL
An emergency button fires a loud siren, camera-flash strobe and vibration on every nearby device, repeating automatically — built to rescue a worker trapped in a tank or tunnel.
REACH FURTHER WITH INTERNET
When any internet connection is available, an additionally-encrypted copy of your messages is relayed through public relay servers to reach a distant coworker — and a single connected phone can act as a gateway for the whole group. One tap turns this off.
REAL PRIVACY
- Full end-to-end encryption (X25519 + AES-256-GCM)
- No accounts, no sign-up, no developer servers
- No ads, no tracking
- Conversations stored only on your phone
- QR identity card to add a distant coworker safely
EXTRA TOOLS
Smart call log, fast contact search and coworker-to-contact linking — all on-device.
Perfect for maintenance crews, construction, factories, mines, ships, events and off-grid trips — anywhere the network disappears but communication must not.
HOW IT WORKS
Open the app and it automatically finds nearby coworkers over Bluetooth within seconds — no internet, no cellular network, no account, no phone number. Messages hop from phone to phone (mesh networking) to cover areas far beyond normal Bluetooth range.
WHAT YOU CAN SEND
- Text messages with delivery and read receipts
- Photos from camera or gallery
- Voice notes and push-to-talk walkie-talkie
- Your location — only when you choose to share it
- An urgent ring alert to a specific coworker
SOS DISTRESS CALL
An emergency button fires a loud siren, camera-flash strobe and vibration on every nearby device, repeating automatically — built to rescue a worker trapped in a tank or tunnel.
REACH FURTHER WITH INTERNET
When any internet connection is available, an additionally-encrypted copy of your messages is relayed through public relay servers to reach a distant coworker — and a single connected phone can act as a gateway for the whole group. One tap turns this off.
REAL PRIVACY
- Full end-to-end encryption (X25519 + AES-256-GCM)
- No accounts, no sign-up, no developer servers
- No ads, no tracking
- Conversations stored only on your phone
- QR identity card to add a distant coworker safely
EXTRA TOOLS
Smart call log, fast contact search and coworker-to-contact linking — all on-device.
Perfect for maintenance crews, construction, factories, mines, ships, events and off-grid trips — anywhere the network disappears but communication must not.
Offline Bluetooth chat with photos, voice & SOS. Encrypted, no account needed
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
• Every notification and channel name now follows the app language — no Arabic text left in the English interface.
• Dates, times and exported chats also follow the app language instead of the phone's.
• Improved opening a chat from a message notification.
• The diagnostics report now names the last failure, so problems are solved faster.
• Removed test buttons that are no longer needed from the Add-coworker screen.
• Dates, times and exported chats also follow the app language instead of the phone's.
• Improved opening a chat from a message notification.
• The diagnostics report now names the last failure, so problems are solved faster.
• Removed test buttons that are no longer needed from the Add-coworker screen.
App support
About the developer
رشاد سمير ابراهيم محمد
translationcertified1@gmail.com
Saudi Arabia
