A simple yet powerful calendar app that lets you manage your events by marking them with a circle!
Use it however you like, whether it's for work, daily schedules, workouts, or even keeping track of pets.
It's intuitive and easy to use, so even beginners can quickly master it.

◆Use Two Calendars: Main and Sub
Switch between your main and sub calendars with a single tap!
Manage your events neatly by separating them by purpose.

・Example: Main = Work / Sub = Health, Hobbies, Family, etc.
・If you don't need to switch, you can set it to "No Switching" in the settings.

◆Quickly Register Events with a Circle
Register your events by marking them with a circle on the calendar.
You can freely customize the color and order to create a calendar that's just for you.

・Use up to 12 colors for your circles (including transparent ones)
・Name each circle and manage them accordingly
・Use the preset function to automate and streamline registration!

◆Easy and flexible input and display
・Continuous input mode
Press and hold a date to register multiple circles

・Event display switch
Turn on/off the event display below the circles

・Year/Month memo
You can also add notes in the blank spaces on the calendar!

◆Notifications and widgets ensure you never miss an event
・Alarm notifications ensure you never forget important events
・Alarm-style notifications ensure you're always updated
・Display the date and day of the week in the status bar
・10 widgets keep your calendar on your home screen!

◆Safe data sharing and backup
・Share calendar events as files (email attachments)
・Two users can import them to manage your schedules together
・Google Drive compatibility for easy backup and restoration

◆Various customization features
・Monday start, display of the six days of the week, holidays, and the 24 solar terms
・Display photos and birthdays
・Customize the names and order of your circles
・Integrate with the system timer

◆Reliable permission design
This app uses only the minimum necessary permissions.
Your personal information will never be transmitted or provided to third parties.

◆Recommended for
Those who want a simple, easy-to-read schedule management system
Those who want to separate multiple schedules by purpose
Those who want to share schedules with family and partners
Those who want more freedom to customize their calendar

Make your daily life smarter.
Start easy schedule management with "Maruin Calendar"!

This app is a calendar tool designed to help you check and manage your daily and work schedules.