Bysky

allows you to chat with users of satellite networks

1
When you want to chat with your friend or colleague, but they are far away where traditional messengers do not work. Use Bysky - chat app for satellite communications devices.
2
When you are far away where there is no connection - just switch on your Iridium GO! and add it to your Bysky app.
3
Click "Sync" - you are online wherever you may be and can freely chat with anybody in Bysky app.
Done! You can send and recieve messages in Bysky