챌린지 디데이 - 함께 도전하는 D-Day

In-app purchases
Content rating
Everyone
50+
Downloads
Content rating
Everyone
Users Interact
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

No more counting down the remaining days for D-Day.

Build your daily steps by checking in, take on challenges together, and grow with cute pixel characters.

■ D-Day where today accumulates

See at a glance the remaining days for exams, trips, and anniversaries, as well as the Nth day since you started. For Challenges, your daily check-in builds a continuous record, while for Goal Achievement, the completion rate increases as you fill out the checklist.

■ Six types to suit your situation

D-Day · Goal Achievement · Challenge · Couple · Anniversary (Lunar Calendar supported) · Repeat

Since the counting methods differ, the screens and characters also vary.

■ Together rather than alone

Take on a challenge with people who share the same goal. Since there are no rankings, you support each other's progress, making it easy to stick with the game for a long time without pressure. In "Together," you can also exchange encouragement and congratulations.

You can create and fix a single D-Day together with family and friends.

■ Pixel characters increase as you complete missions

Different pixel backgrounds and characters accompany you for each type. New characters and backgrounds unlock every time you complete a mission. Enjoy the fun of collecting them one by one. You also earn badges for the tasks you perform within the app.

■ Keep all your tasks in one place

Just type "Dentist tomorrow at 3 PM" and it will automatically set the date and time. Group tasks, create recurring tasks, and clear any backlog with a single "Postpone All" click.

■ No need to open the app

Check your D-Day and instantly check off today's tasks and to-dos via a home screen widget. Decorate your widget with your favorite background images.

Display today's D-Day, tasks, and this week's schedule on your lock screen for a quick overview.

■ Start immediately without signing up

You can create your first D-Day right now without logging in.
Don't just count the remaining days. A D-Day app where you check in every day and take on the challenge together.
Updated on
Oct 20, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    App activity and Device or other IDs
  • This app may collect these data types
    Financial info, App activity, and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

• 알림창에 고정한 D-Day·할 일의 작은 아이콘이 푸시 알림처럼 앱 로고로 보이도록 바꿨어요.
• 삼성 생일 캘린더 이름 옆에 내부 코드가 보이던 문제를 고쳤어요.
Content rating
Everyone
Users Interact
Learn more

App support

About the developer
채민철
memory@moriv.dev
범안로 1180-5 301호 금천구, 서울특별시 08602 South Korea