# 3sec Diary

> A fast, calendar-integrated journal for daily activities and feelings. (iPhone/iPad app by KENJI KANEMOTO.)

- Source: https://appshunter.io/ios/app/3sec-diary/id985967203 (this page in markdown: same URL + `.md`)
- Developer: [KENJI KANEMOTO](https://appshunter.io/developer/402720982)
- Category: Lifestyle, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Languages: American English, Japanese
- Released: 2015-06-04
- Data updated: 2026-07-04
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/3sec-diary/id985967203/reviews.md

## What is 3sec Diary?

This "3sec Diary” is not just a diary. 
You can input what you did, how you feel in this tool.It will take only 3 seconds!Your time will be saved.
And you can leave it on your calendar on iPhone as long as you want.

"3sec Diary “ data is not recorded on App on your iPhone.The data is recorded to your iPhone Calendar.You never miss your data when something wrong with this App. 
Researching ,synchronizing,sharing are so easy.

This “3sec Diary” is not just a diary, but your memories.

## Key features

- 3-second daily logging
- Calendar integration
- Secure data storage
- Easy research and sharing
- Memory preservation

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Eliminate Ads | $0.99 | one-time |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/3sec-diary/id985967203/reviews.md

### 5/5 — 支援学級で活用してます！（が…）

*2025-09-04, version 1.5.0*

文字入力や文章作成に困難を抱えている子供にピッタリのアプリです！ただiOS18以降、アプリが起動せず大変困っています。ぜひ対応いただけたら嬉しいです‼︎

### 3/5 — 入力画面が真っ黒

*2024-10-29, version 1.5.0*

以前は問題なく使っていたと思うのですが、久しぶりに使おうとしたら、入力されるグレーの囲み内が真っ黒で、文字が見れません。
対応よろしくお願いします

### 1/5 — 文字が見えない

*2024-07-30, version 1.5.0*

日記自体は簡単につけることができるのですが、それを読むことができません。
背景の色と文字の色が同じ色なのか入力した文字が見えません。
書いたものを見返そうとしても文字が見えないので意味がないです。

### 5/5 — すごい

*2015-06-26, version 1.0*

はじめは使い方がわからなかったけど、使ってみるとすごく便利。

「誰が」の名前が複数入力出来るようにして欲しい

### 5/5 — とても便利！

*2015-06-07, version 1.0*

使いやすく、繰り返し必要な予定を入れたいときに便利です☆
*･゜ﾟ･*･*:.｡. .｡.:*･゜ﾟ･*
シンプルなところもいいです！

## Frequently asked questions about 3sec Diary

### How does 3sec Diary store my data?

3sec Diary stores your entries directly in your iPhone Calendar. This ensures your data is not lost if the app encounters issues and allows for easy synchronization and sharing.

### Is 3sec Diary free to use?

Yes, 3sec Diary is free to download and use. It also offers in-app purchases for additional features or content.

### Does 3sec Diary have ads?

Yes, 3sec Diary contains advertisements to support its free service.

### What devices is 3sec Diary compatible with?

3sec Diary is compatible with iPhone, iPad, and iPod devices.

### How often is 3sec Diary updated?

The app was last updated on November 14, 2025, indicating regular maintenance and potential feature additions.

### What is the age rating for 3sec Diary?

3sec Diary has an age rating of 4+, making it suitable for a wide range of users.

### Can I export my journal entries from 3sec Diary?

The description mentions that research and sharing are easy, implying export capabilities through calendar sharing features.

## Version history (last 5 releases)

### 1.5.2 — 2025-11-14

We fixed a display-related issue.

### 1.5.1 — 2025-11-11

Fixed an issue preventing the app from running on iOS 18.
Fixed a display issue in Dark Mode where certain elements did not appear.

### 1.5.0 — 2021-06-20

Fixed diary list screen.
Fix problem.

### 1.4.7 — 2018-03-03

This app has been updated by Apple to display the Apple Watch app icon.

bug fixed

### 1.4.6 — 2016-01-14

bug fix.

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## More apps by KENJI KANEMOTO

- [monoMachineZ](https://appshunter.io/ios/app/monomachinez/id402720979)
- [eventLoop](https://appshunter.io/ios/app/eventloop/id483681104)
- [The Traveller](https://appshunter.io/ios/app/the-traveller/id665945384)
- [digitalization of 4th](https://appshunter.io/ios/app/digitalization-of-4th/id6448651638)

All apps by KENJI KANEMOTO: https://appshunter.io/developer/402720982

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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 2026-07-04.*