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aircal is a free calendar app based on the concept of "no opening, no confusion, beautiful," focusing on the experience of "viewing" your schedule. It automatically syncs with Google Calendar, allowing you to smartly organize both work and personal schedules on a single screen. No complicated settings are required; it's a simple and easy-to-use planner app that you can use right away after installation.

With its free and simple schedule management, minimize the time you spend opening your calendar. Manage your daily schedule more quietly and beautifully.

■ Easy-to-read calendar at a glance

This calendar app prioritizes a balanced approach to information density and white space, primarily using a monthly view. Swipe with your fingertip to navigate between months, intuitively completing everything from checking to adding appointments.

* Simple operation: Create and edit appointments with a single tap.
* Friction-free animation and smooth operation.
* Easy-to-read monthly view for a quick overview of this month's schedule.
* Stylish and simple schedule design.
* Eye-friendly calendar screen with ample white space.

This simple and easy-to-read schedule app is perfect for those who find opening schedules cumbersome or existing calendar apps cluttered and difficult to read.

■ Optimized for Google Calendar Integration

aircal is a free calendar app that integrates seamlessly with Google Calendar. It allows you to unify business and personal schedules into a single calendar without worrying about boundaries.

* Real-time two-way synchronization with Google Calendar.
* Supports switching between multiple Google accounts.
* Maintains the same schedule display even when switching devices such as PCs and tablets.
* Inherits existing Google Calendar schedules as they are.
* Automatic synchronization. No troublesome manual updates required.

If you already use Google Calendar, simply install the app and sync. Your existing appointments will be displayed in an easy-to-read design.


■ Quickly Check Your Schedule with Home Screen Widgets

Check your next appointment instantly on your home screen without opening an app. aircal is a calendar and schedule widget app that pursues a "no-open UX."

• Choose from daily, weekly, or monthly widget displays
• See your schedule at a glance from your home screen
• Stylish and easy-to-read calendar widget
• Supports a widget that compactly displays only today's appointments

You can understand your day's flow just by looking at the home screen widget, without having to open the app every time.

■ Check Your Schedule on Wear OS

You can check your schedule synced with your smartphone in weekly lists and monthly calendars. The "Today's Schedule" tile displays up to 3 appointments for the day, and you can tap to open the app.

■ Designed to "Never Forget" with Reminder Notifications

aircal's reminder notifications are designed with "peace of mind" as the theme. They gently prevent you from overlooking important appointments with notifications.

* **Scheduled Reminder Notifications**
* **Prevent Missing Appointments with Multiple Reminder Settings**
* **Ensuring Important Schedule Management with Notifications**

■ Shared Calendar for Family, Spouses, and Couples

This schedule book allows for hassle-free schedule sharing as a family shared calendar. It seamlessly utilizes Google Calendar's sharing features for natural collaborative editing.

* **Family Calendar / Team Sharing / Schedule Sharing for Spouses and Couples**
* **Collaborative Schedule Editing and Adding Participants**
* **View Shared Schedules in One Calendar**

Perfect for sharing family schedules, coordinating dates and anniversaries with your spouse or partner, or keeping track of children's school events and extracurricular activities.

■ **Work and Shift Schedule Management**

Manage not only your private schedule but also your work schedule in one place. Organize shift work, part-time work, and attendance schedules smartly on the same screen as your private schedule.


* Keep track of work and personal schedules in one calendar
* Easily manage shifts, work hours, and attendance schedules
* For business schedule management, including meetings, business trips, and deadlines
* For student schedule management, including classes, assignments, and part-time jobs, and creating schedules

From managing work for professionals to student schedules and shift work schedules, this simple schedule book adapts to your daily needs.

■ Customize to your liking

This simple schedule book can be customized to your specifications.

* Change theme colors / Color-code appointments
* Dark mode support for easy viewing at night
* Switch holiday display
* Change settings for days of the week and the start date of the week

■ Why choose aircal?

* Simple and easy-to-read monthly schedule. Even with a lot of information, you can see today's schedule at a glance.
* Syncs directly with Google Calendar. No need to re-enter new appointments.
* Easily share schedules with family, spouses, and partners. It can be used naturally as a shared calendar.
- Check your next appointment without opening it with a home screen widget.
- Free, stylish, and quiet design.

■ Recommended calendar app for these people and situations:

- Those looking for a simple and easy-to-read free calendar/planner app.
- Those who want a planner app that can sync with Google Calendar.
- Those who want to share schedules with family, spouses, or partners.
- Those who want to manage children's school events and extracurricular activities on a family calendar.
- Those who want to quickly check their schedule with a home screen widget.
- Those who want to simplify work, shift, and part-time job schedule management.
- Those looking for a stylish, easy-to-use, and popular schedule book.
- Those who find existing calendar apps difficult to read and are considering switching.
- New employees and job seekers who want to make schedule management a habit.
- Dual-income couples who want to consolidate everyone's schedules into one calendar.

■ Manage your daily schedule with just this one app.

From checking your schedule in the morning, adding appointments during the day, to checking the next day at night. aircal aims to be a simple, easy-to-read free calendar that you'll want to open multiple times a day. Manage your work schedule, share appointments with family, spouses, and partners, and quickly check your schedule with a home screen widget—all in one app. Synchronizing with Google Calendar, it gently supports your daily schedule management.

Simple, easy to read, and stylish. This calendar app ticks all the boxes, making managing your busy daily schedule much more comfortable.

■ Frequently Asked Questions

Q. Is it free to use?

A. Yes. aircal is a free calendar app that you can download and use.

Q. Can it synchronize with Google Calendar?

A. Yes. It synchronizes with Google Calendar in real time, bidirectionally. Existing appointments can be carried over as is.

Q. Can I share appointments with family or my partner?

A. Yes. You can share and collaboratively edit schedules with family, spouses, partners, and teams using Google Calendar's sharing function.

Q. Is there a home screen widget?

A. Yes. We offer calendar widgets that you can choose from for day, week, or month. You can check your schedule without opening the app.

Q. Does it support dark mode?

A. Yes. It supports dark mode and theme color changes. You can use the calendar display in a way that's easy to see even at night.

Q. Can I transfer my data if I change devices?

A. Yes. Because it syncs with Google Calendar, the same schedule will be displayed on your new device once you log in.

Q. Can I change the notification timing?

A. Yes. You can set reminder times for each event, and it supports multiple reminders. This prevents you from missing important schedules.

Q. Can I set the week to start on Monday?

A. Yes. You can change the day of the week and the start date of the week in the settings. It supports both Sunday and Monday starts.

■ Simple & Free Shared Calendar App

aircal is a simple and free shared calendar app for Android. It offers real-time calendar sync with Google Calendar, a clean home screen calendar widget, reminder notifications, and easy schedule sharing with your family, partner, and team. If you are looking for a minimal, easy-to-use calendar app and schedule planner, aircal keeps your daily schedule beautifully organized.

With aircal, you'll feel a sense of "organization" every time you check your schedule. Manage your schedule more beautifully and quietly. Download for free and try a new calendar experience.