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Screenshots

  • MiiBook Journal: Private Diary screenshot 1
  • MiiBook Journal: Private Diary screenshot 2
  • MiiBook Journal: Private Diary screenshot 3
  • MiiBook Journal: Private Diary screenshot 4

About MiiBook Journal: Private Diary

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 ・Home Widget ・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. Terms of Use: https://tinylab-apps.web.app/TermsOfService/ja.html Privacy Policy: https://tinylab-apps.web.app/PrivacyPolicy/ja.html

Ratings & reviews

4.8

5 ratings

5 ★ 80% 4 ★ 20% 3 ★ 0% 2 ★ 0% 1 ★ 0%

What’s new

Version 6.2.2 · Updated March 28, 2026

- Bug fixes and performance improvements.

App privacy

The developer, Ryunosuke Nagase, reported these privacy practices to Apple.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location: Coarse Location
  • Identifiers: Device ID
  • Usage Data: Product Interaction

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Location: Coarse Location
  • Identifiers: Device ID
  • Usage Data: Product Interaction
  • Diagnostics: Crash Data, Performance Data

Used for: Third-Party Advertising, Analytics

Alternatives to MiiBook Journal: Private Diary

Looking for apps like MiiBook Journal: Private Diary? Here are 6 similar apps on the App Store. The highest rated is Fresh Diary - Pure Diary·Notes (4.9/5), and all 6 are free to download.

MiiBook Journal: Private Diary vs. alternatives
App Rating Price Last updated
MiiBook Journal: Private Diary 4.8 / 5 (5 ratings) Free March 28, 2026
JotJournal - Private Diary 4.3 / 5 (13) Free Sep 15, 2026
DrawerJournal - Private Diary 4.6 / 5 (74) Free Sep 14, 2026
Fresh Diary - Pure Diary·Notes 4.9 / 5 (30) Free Apr 9, 2026
Purple Diary: Journal & Lock 4.8 / 5 (87) Free Sep 28, 2026
Diary, Private Journal: Diario 4.9 / 5 (42) Free Nov 4, 2025
Secret Diary : with lock 4.8 / 5 (112) Free Aug 30, 2024