CleanMaster is a utility application designed for iPhone users to organize and optimize their photo albums and contacts. It offers a range of features aimed at enhancing device storage and maintaining privacy. The app allows users to identify and delete duplicate and similar photos, ensuring a streamlined photo library. Additionally, it helps users manage large files by identifying and removing them, thus freeing up valuable storage space.

In addition to photo management, CleanMaster provides robust contact management features. Users can delete duplicate contacts, merge them, and even back them up for safekeeping. The app also includes a feature to clean up expired calendars and reminders, contributing to a more organized device. A notable aspect is the secret space function, which allows users to hide private photos, videos, and contacts, ensuring enhanced privacy protection.