Kloakr

Kloakr is a texting cloaking app that runs inside of Apple Messages.
Your texts, photos, and videos are biometrically encrypted by the sender.
After sending the messages are permanently destroyed on the sender's iPhone.
Upon receipt, the messages are biometrically decrypted and only displayed while the receiver holds their finger down on the screen.
Upon the release of the user's finger from the screen, the message disappears and is completely destroyed on the receiving iPhone.
No trace exists of the originating or receiving message on the iPhones involved or on the internet.