Actually, although there are files of pictures, for some reason they may become disappearing on applications such as galleries.
This app will fix this problem.
Smart phones have a database that manages photos and videos inside.
The problem written above is due to the difference between the information managed by this database and the information on the file system.
This application synchronizes the information managed by the database with the file system information by scanning the internal storage and the SD cards and registering it in the management database.
With this, you will be able to see pictures that you could not see with applications such as galleries.
You can select photos / images (MIME Type = image / *), movies (MIME Type = video / *), music (MIME Type = audio / *) as objects to be scanned.
You can specify internal storage and SD cards as the scanning range.
You can also specify directories.