# Penguin Diary :Record & Health — Evaluate a day with 3 choices.

> Daily reflection journal to track mood and identify happiness triggers. (iPhone/iPad app by Masao Saeki.)

- Source: https://appshunter.io/ios/app/penguin-diary-record-and-health/id1435000956 (this page in markdown: same URL + `.md`)
- Developer: [Masao Saeki](https://appshunter.io/developer/1435000955)
- Category: Health & Fitness, Medical
- Price: Free with in-app purchases
- Rating: 4.80/5 from 4 App Store ratings · 53 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 172 MB
- Languages: American English, Japanese
- Released: 2018-09-07
- Data updated: 2026-08-20
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/penguin-diary-record-and-health/id1435000956/reviews.md

## What is Penguin Diary?

At the end of the day, you can rate your day with "maru", "batsu", or "sankaku".

A good day: ・・・・・Maru
A bad day: ・・・・・・Batsu
A so-so day ・・・・・San-Kaku

You can discover what words are associated with a good day or a bad day by writing the reasons in your diary. The criteria for judging a good day and a bad day change. The feature of this app is that you can notice the changes in the criteria.

For situations like these
When you feel like going on a journey of self-discovery.
When you want to be happier.
When you want to know what events are related to your happiness.

Recommended for
People who want to know their own values
People who want to keep a diary but can't keep it up
People who want to keep a diary but can't keep it up
People who want to continue using the diary for a long time.

Credits
UnSplash licensed photos are used.
I'm using the following illustrations from freepik
Pikisuperstar - water vector created by jp.freepik.com
Vectorpouch - banner vector created by jp.freepik.com
Macrovector - business vector created by jp.freepik.com
Jannoon028 - Background photo created by jp.freepik.com
Katemangostar - background vector created by jp.freepik.com
Upklyak - snow vector created by jp.freepik.com
Freepik - winter vector created by jp.freepik.com

Translated with www.DeepL.com/Translator (free version)

## Key features

- Daily mood rating (good, bad, so-so)
- Diary entries with reasons
- Identify happiness triggers
- Track changes in self-perception
- Encourages long-term journaling

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium Plan | $7.99 | one-time |


## Recent user reviews (10 of 53)

All indexed reviews: https://appshunter.io/ios/app/penguin-diary-record-and-health/id1435000956/reviews.md

### 3/5 — 改善希望

*2025-11-24*

アプリを開いた際に曜日が出ないのが分かりづらい

### 4/5 — 継続できてます！

*2024-11-15*

マークを3択から選んで、その日にやった事を一言書いて、タグを選ぶだけ☝️
気に入ってます、が検索でのマークやタグのカウントがされなくなることが多くて(カウントされてる方が稀、環境の問題か？)、星いっこマイナスです。

### 5/5 — 1000日間毎日欠かさず、ずっと使ってます

*2024-11-06*

少し重いですが、可愛くて見やすくてもう1000日以上日記を続けてます。
不具合の際の対応も早くありがたいです。
検索機能が本当に嬉しい。
何かと便利です。
今後もさらにスムーズに使えるようになることを期待しています。

### 3/5 — 不便になった？

*2024-10-15*

パージョンアップしてからは、一度保存した日記に手を加えられなくなりました。例えば、書きかけで保存した日の続きを書き込めない。間違いを後日、修正できない。思い出したことを追記できない、等。
お気に入りの日記アプリだったのですが、最近は遠ざかってしまっています。

### 2/5 — 検索ができなくなった

*2024-08-30*

ダウンロードして半年ほど使用しましたが、ランキング/検索機能が使えなくなりました。
そこが使いたくてこのアプリを選んだのに…。
また、過去の日記を振り返ると頻繁に落ちます。
自分の端末からの写真を多く使っているから、私のデータが重いのかも知れません…
検索ができないことも相まって、振り返りがしにくいのでは、私の目的からは逸れてしまいました。

**Developer response:** レビューありがとうございます。ランキングについて修正しました。その他の問題は調査中です。ご迷惑をおかけします。

### 2/5 — 諸々

*2024-07-18*

落ちる、バックアップ取れない。アップデートしたら、いい日などのランキングがなくなってしまった。また、トロフィーが表示されない。
ずっと使ってるのでどうにかして欲しいです。その他はとても使いやすいアプリです！

**Developer response:** レビューありがとうございます！
ランキングについて修正しました。ご迷惑をおかけします。

### 4/5 — Good

*2024-06-02*

Helped me understand my day but when I refresh the app the mark style changes back to the original, I also wish they had a streak function so that you feel motivated to use the diary

### 4/5 — 使ってみて

*2023-09-27, version 7.7.1*

初めて使ってみて、短い文でも良さげそうで
書きやすそうだけど、写真の出し方がわかりにくかった。

### 5/5 — はじめました！

*2023-09-04*

飽き性な僕でも続けられそう！

### 5/5 — 良い感じ

*2023-04-23*

今まで日記📓はつけた事がなかったけど、ペンギン🐧の写真が可愛くて、無料だし、軽い気持ちではじめてしまいました。
今日で約２カ月続いていますが、まだ一度も休む事なく続いています（＾∇＾）
始めて良かったと思います！

**Developer response:** 返信遅くなりました

ご利用ありがとうございます！うれしいです。今後もよろしくお願いします！

## Frequently asked questions about Penguin Diary

### What is Penguin Diary?

Penguin Diary is a health and fitness app that allows users to rate their day as good, bad, or so-so. It helps users discover what events are associated with their happiness by writing reasons in their diary.

### How does Penguin Diary help with self-discovery?

By consistently rating your day and noting the reasons, Penguin Diary helps you identify patterns and understand the criteria that define your good or bad days. This process can lead to greater self-awareness and insight into your values.

### Is Penguin Diary suitable for people who struggle to keep a diary?

Yes, Penguin Diary is recommended for people who want to keep a diary but find it difficult to maintain. Its simple rating system and focus on daily reflection make it easier to start and continue a journaling habit.

### What are the "maru", "batsu", and "sankaku" ratings in Penguin Diary?

In Penguin Diary, 'maru' signifies a good day, 'batsu' represents a bad day, and 'sankaku' indicates a so-so day. These are simple visual cues to quickly categorize your daily experience.

### Does Penguin Diary have ads?

Yes, Penguin Diary contains advertisements. As a free app with in-app purchases, advertisements are part of its operational model.

### What devices does Penguin Diary support?

Penguin Diary is supported on iPhone and iPod devices. It is designed for Apple's mobile operating system.

### How often is Penguin Diary updated?

Penguin Diary was last updated on April 12, 2025, with version 7.12.0. This indicates regular updates to improve functionality and user experience.

### What is the age rating for Penguin Diary?

Penguin Diary has an age rating of 4+, making it suitable for a wide range of users, including children and adults.

## Version history (last 5 releases)

### 7.12.0 — 2025-04-12

bug fix

### 7.11.0 — 2025-03-01

fix bug

### 7.10.1 — 2024-05-28

Bug Fix

### 7.10 — 2024-05-28

UI has been slightly modified.

### 7.9.3 — 2024-05-19

bug fix

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| [AlcoholLog](https://appshunter.io/ios/app/alcohollog/id1591360487) | — | Free | Health & Fitness |
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## More apps by Masao Saeki

- [転倒センサー](https://appshunter.io/ios/app/id1476369736)
- [Talking Timer: Voice Alerts](https://appshunter.io/ios/app/talking-timer-voice-alerts/id1582848182)
- [まるばつカレンダー：予定表とマーク日記](https://appshunter.io/ios/app/id6448878378)
- [占いモーメント](https://appshunter.io/ios/app/id6502551044)
- [Triad AI Journal: Self-Care](https://appshunter.io/ios/app/triad-ai-journal-self-care/id6504456135)

All apps by Masao Saeki: https://appshunter.io/developer/1435000955

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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 2026-08-20.*