★ RedPhone uses your normal phone number to make and receive calls, so you don't need yet another identifier.
★ RedPhone calls are encrypted end-to-end, but function just like you're used to.
★ Free and Open Source, enabling anyone to verify its security by auditing the code.
★ Uses wifi or data, not your plan's voice minutes.
★ All RedPhone calls are free, including long distance and international.
More information:
https://whispersystems.org
Please file any bugs, issues, or feature requests at:
https://github.com/whispersystems/redphone/issues