Our secure shredder forensically erases all deleted files from all your apps that were stored and then deleted from the devices hard drive (SMS, emails, pictures, mp3s, and files from any other app).
This is an unrecoverable action.
While running, Wickr works continuously to wipe areas of main memory and device storage recently used to display text or multimedia content.
The forensic cleaning does multiple passes, writing random characters and deleting them on the entire empty space of your phone. It cannot delete any server-streamed files/media that are only in RAM.
If you have iCloud enabled then you may be able to retrieve deleted files from that service and also see deleted files in your spotlight search due to Apple caching that data.