# Past Diary — Brain Activating Diary

> Brain Activating Diary (iPhone/iPad app by Shin Nariai.)

- Source: https://appshunter.io/ios/app/past-diary/id1590865271 (this page in markdown: same URL + `.md`)
- Developer: [Shin Nariai](https://appshunter.io/developer/1573530687)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 14.5 · 93 MB
- Languages: English, Japanese
- Released: 2021-11-30
- Data updated: 2026-06-10
- User reviews in markdown: https://appshunter.io/ios/app/past-diary/id1590865271/reviews.md

## What is Past Diary?

Can you remember what you ate yesterday? What color of clothes did you wear yesterday?
It is said that the brain degenerates if it is not used. Why don't you try to revitalize your brain by remembering the past?

"Brain Activity Diary" provides you with questions about the past every day. By keeping a diary every day, you can naturally make it a habit to review the past.
You can also check your statistics to see how well you answered the questions. However, the important thing is to use your brain. In the beginning, try not to focus on the score, but make it your goal to keep a diary every day. For those who have made it a habit to keep a diary, try to get 100% !!
(The score is just a self-score. If you fill in something, it will be evaluated as if you remembered it.)

We hope that “Past Diary" will help you to revitalize your brain.

*The effects may vary by individual.
*We do not guarantee the effectiveness of this App.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Features | $0.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2021-11-30

No release notes.

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## More apps by Shin Nariai

- [Handy Pilot](https://appshunter.io/ios/app/handy-pilot/id1573532661)

All apps by Shin Nariai: https://appshunter.io/developer/1573530687

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*