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Write down your day, one line at a time every day.

Harukan is a simple and heartwarming diary app where you write a single line of journaling every day. Without any complex features, you simply need to briefly record what happened today.

✨ What Makes It Special ✨

📅 It Accumulates Automatically in Your Calendar

Diary entries written in Harukan are automatically saved to your phone's default calendar. You don't need to transfer them separately; simply opening your calendar allows you to see your daily records at a glance. Later, just flipping through the calendar brings back memories, making you think, "Oh, this happened on this day."

🔐 No Sign-up or Login

You don't need an email or a password. You can write your daily journal entry immediately upon opening the app. You can focus solely on writing your journal without any cumbersome procedures.

🌙 A Quiet Reminder Every Evening

We send a gentle notification at a set time every day asking, "How was your day?" This helps you build a habit of recording your day without forgetting. You can freely change or turn off the notification time.

🌱 Large and Comfortable Screen

We designed it so that anyone can use it easily with large fonts and buttons. The screen isn't cluttered, so even first-time users will get used to it quickly.

Fill in a space today. Small records come together to form your own year.