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MiiBook Journal Downloads & RevenueMiiBook Journal: Private Diary · App Store

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Updated 2 Nov 2026 · rankings refresh through the day

DeveloperRyunosuke Nagase
CategoryLifestyle
PriceFree
Released
Rating★ 4.7 (331)
Version6.2.3
Age rating4+
First seen by us 12 Oct 2026

MiiBook Journal: Private Diary update history & changes

Last change · 4 events since 18 Jul 2023Full timeline ↓
Full timeline · 4 events
  1. 🆕
    MiiBook Journal: Private Diary first spotted by AppInsider
    Japan (found via developer)
  2. 🆕
    MiiBook Journal: Private Diary: its developer released another app: Yondo Todoリストをロック画面に。シンプルタスク管理
  3. 📦
    MiiBook Journal: Private Diary version 6.2.2
    - Bug fixes and performance improvements.
  4. 🆕
    MiiBook Journal: Private Diary released on the App Store

Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.

Rating
4.7 ★
331 ratings
Measured

MiiBook Journal: Private Diary on the App Store

App details

App ID
6451179720
Publisher
Ryunosuke Nagase
On the store since
Jul 2023
3 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN JA
Size
146 MB
Also listed in
Health & Fitness