Sale has ended but you can still get this app.
Download Franklinizer Now

Official Description

Franklinizer is an ANDROID based image viewer and camera system that automatically secures jpeg images and mp4 videos using AES 256 bit encryption. Images taken with the camera are converted in memory to encrypted .ben or .bf4 format and stored in the default pictures "softwar" sub-directory. Ben files are always encrypted and decrypted in memory so only the secured image or video file is stored on your system. Franklinizer also includes a "SELF DESTRUCT" feature designed to destroy the AES keys and delete the encrypted image and video files.

Full details and instructions for use: https://www.softwar.net/franklinizer.html