End-to-end encrypted file transfer and chat for complete privacy and security.
Underpass is different from every other encrypted communication app because it does not use a third-party service. It's just two devices and a password. Peer-to-peer. There's no signup. No account. No phone number, email, contacts, or any personal information requested, not even your real name.
You can communicate securely over the internet or on a LAN, such as in an office, school, coffee shop, or home. All of your data is encrypted before it's sent over the network, and it can't be decrypted except by the other device using Underpass. Industry-standard AES-128 encryption algorithm.
* File transfers of any file type
* Inline images, including animated gifs
* Unicode text and emoji chat
Underpass for iOS is also available in the iOS App Store. You can chat with a Mac, iPhone, iPad, or iPod touch using Underpass.
• Fixed an issue that could occur on some systems where the link text was truncated in the internet chat settings popover.
• Added "Rate in App Store" item to the Help menu.
With Family Sharing set up, up to six family members can use this app.