A free program for Android, by Roze studio.

Recover Deleted Files – Photo and Video Recovery is an amazing Android recovery app for all your lost photos and videos. If you have accidentally deleted a photo or video, or if it has been lost because of a system or hardware fault, this app is the best way to restore it.

This is a powerful and easy-to-use tool that scans all the files on your phone and SD card, looking for the deleted ones. It is capable of recovering lost photos and videos, and restoring them to your phone’s gallery. It does not require root access to do its job.