MiiBook is your simple, personal diary app. We've made a conscious effort to provide a clean, engaging design that you won't tire of.
Operation is easy, with no account registration required. Simply install the app and start using it immediately.

【Features】
・Write a quick line or take your time
・Instant entry upon opening the app
・Easy reflections via calendar
・Switch calendar views by month
・Dark mode compatible
・Never forget to log with reminder notifications
・Only you have access to your data
・AI automatically generates monthly summaries!


■ Write a quick line or take your time
On busy days, jot down a single line. When you have time, write in detail. With the freedom to match your mood, keeping a daily diary is easier than ever.

■ Instant entry upon opening the app
MiiBook is committed to a user-friendly experience. Tap the blank date field from the home screen and the keyboard appears for immediate input.

■ Easy reflections via calendar
You can reflect on your diary entries in a calendar format. Reviewing past entries can help you recognize your personal growth and emotional changes.

■ Switch calendar views by month
Simply swipe left or right to review your past records.

■ Dark mode compatible
The app is friendly on the eyes and also supports dark mode. The theme switches according to your device settings. Enjoy the app in your favorite theme.

■ Never forget to log with reminder notifications
Of course, reminder notifications are also supported. We support the habit of daily journaling with daily notifications. You can also turn off notifications.

■ Only you have access to your data
Your journal entries are stored only on your device. Therefore, you can comfortably record your thoughts and feelings.


【Recommended for those who】
・Felt other diary apps were complicated with unnecessary features.
・Want to use a simple diary app.
・Desire a diary app that they won't tire of.
・Prefer an app that allows quick and easy entries.
・Prioritize privacy and want their data stored only on their device.