http://techcrunch.com/2013/09/09/ansa-is-a-messaging-app-that-let-you-talk-off-the-record/ With Ansa you can go "off the record", and have full conversations that automatically disappear; send self-destructing texts, photos, drawings, and other multimedia; and use synced deletion to take back messages that were already delivered and read. Ansa launched with TCD in the Battlefield. Available on Android and iOS.