DAILY DAY - Countdown Days is a free Android app developed by yjteam that allows users to keep track of important dates such as anniversaries, birthdays, and other events. The app offers various types of calculations, including D-Day, Monthly, Annually, Months and Days, and users can sort events by upcoming date, older date, or manually.

One of the standout features of DAILY DAY is the ability to create customized D-day covers using basic cover photos or personal images. The app also offers two types of home screen widgets and a D-DAY Notification bar to keep track of important dates at a glance. Additionally, users can count anniversaries automatically, receive anniversary notifications, and share their D-day events on social media.

DAILY DAY also offers password and fingerprint protection to keep user information safe. Overall, DAILY DAY - Countdown Days is a useful and easy-to-use app for anyone looking to keep track of important dates in their lives.