SIRF Ping
Private messages, groups and calls. End-to-end encrypted, gone from the server once delivered, and no phone number needed.
End-to-end encrypted
Messages are locked on your phone and unlocked only on your contact's phone. SIRF cannot read them.
Deleted once delivered
A message waits on the server only until it reaches the other phone. Undelivered messages are removed after 30 days.
No phone number
Pick a name and get a Ping ID to share. Nobody can find you unless you give them your ID.
Encrypted files
Send documents, photos and other files up to 25 MB. The server only ever holds them encrypted, for at most 7 days.
Voice and video calls
Encrypted calls between phones. Your phone number is never shared.
Private groups
Groups of up to 32 people, encrypted for each member, with admins and invite links.
Photos and voice notes
Share photos, videos, voice notes and files, reply, react and delete for everyone.
Recovery key
An optional encrypted backup moves your account and chats to a new phone. Only your recovery key opens it.
Quiet notifications
Notifications carry no message text; your phone fetches and decrypts the message itself.
Block and report
Block anyone in one tap, and report abuse to SIRF with the person's Ping ID.
Good to know
Your SIRF Ping account lives on your phone. To move it to a new phone, turn on backup and keep your recovery key safe: without it, nobody (including SIRF) can restore your chats.