It has multiple functions! You can create and save plans and create repeated plans separately. You can switch the images of calendar by tapping images. You can select images from the album of the mobile or take new photos to customize the calendar! You can add marks on the date to show other plans of your day! The initial window is the calendar. When you select an icon for a daily plan or a repeated plan, the mark is now reflected on the date of the calendar. You can select and save 4 icons