1. GALLERY LOCK (MEDIA LOCK):
Gallery Lock App is the most popular app for hiding the photos in Android.You can organize the photos using PIN or PASSCODE privately.If you want access the hidden photos just dial ''#789'' on the keypad .
Hide Pictures App allows to hide the photos and Videos.The access of the hidden photos and videos files will be very easy compare to other apps,which are available in the android market.
3. GALLERY LOCK
GALLERY LOCK App is famous app for keeping the private files on safe mode.The best option in this app is hiding the media files and also App Icon as well.so,nobody can see even app icon.