365 Days - So Fancy D-Day is a free Android app developed by Mu-ik Jeon. It falls under the category of Utilities & Tools. This app is designed to remind you of your memorable days, such as birthdays, anniversaries, and other special events. The app allows users to choose their own type of event and set reminders before one month, week, and day.

One of the best features of this app is its customizable widgets that can be added to your home screen. The app also offers a text day list view that displays all your memorable days in one place. The latest version of this app, 1.1.2, has several improvements, including widget resizing, widget opacity setting, and syncing days with Google Drive account (requires Google Play Service).

Overall, 365 Days - So Fancy D-Day is a useful app for anyone who wants to keep track of their important dates and events. It is easy to use and has a simple yet elegant design by namss. However, the app does not offer any subcategory and the developer information is not provided.