A free app for iPhone, by Jinpyo Hong.

Photo Cleaner – Album organizer is an application to remove photos and videos from your mobile device, to keep it free of useless files. This utility can scan your photo library to identify duplicate images or videos and remove them at once. Also, this app allows you to compress and reduce the size of your images, so you can store them in a more space-efficient manner.

This application has a very simple interface, so even if you do not know about the functions of the app, you will not have difficulty in using it. It is also very easy to use, so it will be a pleasure for you to use this app.