Super Simple D-Day

Never miss important moments with D-Day Countdown, the elegant event tracking app that helps you count down to life's special occasions. BEAUTIFUL COUNTDOWN DISPLAYS Transform your important dates into stunning visual countdowns. Switch between sentence and list formats to match your style. SMART EVENT MANAGEMENT • Create unlimited events with custom titles • Set traditional lunar calendar dates • Pin favorite events for quick access • Flexible repeat schedules: daily, weekly, monthly, yearly INTELLIGENT NOTIFICATIONS • Custom notification timing (1-30 days before) • Smart app badge showing next upcoming event • Background alerts so you never miss important dates PERSONALIZATION OPTIONS • Dark and light themes with system sync • Adjustable font sizes for better readability • Multiple sorting and filtering options • Support for English, Korean, Japanese, Spanish RELIABLE DATA MANAGEMENT • Secure backup and restore functionality • Easy import/export of your events • Firebase cloud integration for reliability