# Kigen ~ penguin task tracker — Joyfully meet deadlines.

> Simple task manager with deadline tracking and motivational features. (iPhone/iPad app by Taito Iikura.)

- Source: https://appshunter.io/ios/app/kigen-penguin-task-tracker/id6477283404 (this page in markdown: same URL + `.md`)
- Developer: [Taito Iikura](https://appshunter.io/developer/1506013840)
- Category: Productivity, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.6 · 20 MB
- Languages: English, Japanese
- Released: 2024-02-03
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/kigen-penguin-task-tracker/id6477283404/reviews.md

## What is Kigen ~ penguin task tracker?

Kigen Tasks is a semi-task management scheduling app designed to help you enjoyably meet deadlines. Kigen (期限) means due/ deadline in Japanese.
There is a reason why I wrote "semi".
This app is a little too simple to be called a scheduling app. All you need to enter is the title, a quick note, the due date, and the importance of the task.

It is also very simple to use.
When a task is completed, you just record it as completed.

Completed tasks will disappear, but uncompleted tasks will stay on the list until they are completed, regardless of the passing days.
Other features include
・Background colours as a due status indicator.
When the background colour is green, it is safe! If you have an appointment within 5 days, it will turn yellow, for the next day's task it will turn orange, and on the same day or when an appointment has already passed the due date, it will turn red.

・Punctuality level
If you complete a task earlier than the set due date, you will move up a level! On the other hand, if you miss the deadline, you will be downgraded. There is nothing special that happens just because the level is raised, but it is a nice feeling to see the number go up, so I hope you will make use of it to motivate yourself.

・Notification function
Notifications are sent one week, five days, three days, two days, the day before, and the day of the deadline!

This is why this app is too simple to be called a schedule app, instead, it is an app that was created with the focus on how to help you keep up with your deadlines simply and enjoyably.

No more last-minute deadlines!

## Key features

- Task title, note, due date, and importance entry
- Color-coded due date status indicators
- Punctuality level system for motivation
- Customizable deadline notifications
- Simple task completion marking

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Support Kigen App | $1.99 | one-time |
| Support Kigen App | $4.99 | one-time |
| Ads Free Plan | $14.99 | one-time |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/kigen-penguin-task-tracker/id6477283404/reviews.md

### 4/5 — 今後も使いたいからこそ

*2025-12-27, version 1.10*

UIも機能もいい意味で最低限でとても使いやすい。
今後もぜひ使っていきたいので機能追加のリクエストです。

①お恥ずかしながら期限内に終わらせていたのに完了ボタンを押してなかった…！ということがよくあるので、完了した日付を指定できる(さかのぼれる)機能が欲しいです。

②仕事柄、同じ内容のタスクを複数登録するので、タスクのコピー機能があるとより嬉しいです。

とはいえ上記は「あったらいいな」という感じなので、なくても使い続けます。それくらい使い勝手がいいです。

### 5/5 — 神

*2025-12-11, version 1.10*

シンプルでとっても使いやすい！
ごちゃごちゃ色んな機能がないのが良い。

【良かったところ】
やることリストとか他のアプリだと期限が表示されるだけで先延ばしにしがちだったので、残りの日数が全部一覧で表示されてるのはありがたいです。残り日数が少なくなると色が変わるのも視覚的にわかりやすくて良い。先延ばしにしがちな方におすすめです！

【改善して欲しいところ】
1番上とかに今月のミニカレンダー？みたいなのを表示して、今日はカレンダーのどの位置の日なのか分かるようにしてくれたらありがたいです。1週間とかだけでも！

あとウィジェット機能が欲しいです！
アプリを開き忘れないようにそういう表示機能があると助かります！！

### 5/5 — 良いアプリです

*2025-01-05, version 1.02*

ありがたく使わせていただいております。
少しずつでも期限より早くが習慣になるように改善していきます。

### 5/5 — 期限の管理にめっちゃ良い

*2024-03-26, version 1.02*

先月に何度か期限を逃してしまうことがあり、期限をうまく管理できるアプリがないかといくつか試してみてこのアプリに落ち着きました。シンプルで手間がかからず、さらに背景の色で期限の近さを把握できるのでとても助かっています🙏

### 5/5 — The best app ever!!!

*2024-02-18*

This app changed my life. From now I’m really good at managing my time.

## Frequently asked questions about Kigen ~ penguin task tracker

### What is Kigen's primary function?

Kigen is designed to help users manage tasks and meet deadlines. It focuses on simplicity, allowing users to input task details, track due dates with color-coded indicators, and receive notifications.

### How does Kigen motivate users?

Kigen includes a 'Punctuality Level' system. Completing tasks before their due date increases your level, providing a sense of accomplishment and encouraging timely completion.

### What kind of notifications does Kigen provide?

Kigen sends notifications at various intervals before a deadline, including one week, five days, three days, two days, the day before, and on the day of the deadline.

### Is Kigen available on multiple devices?

Currently, Kigen is supported on iPhone devices. Information regarding availability on other platforms like Android is not provided.

### How often is Kigen updated?

The latest version of Kigen is 1.10, and it was last updated on February 4, 2025. This indicates a relatively recent update frequency.

### Does Kigen have ads?

Yes, Kigen contains advertisements. This is indicated by the 'hasAds' flag being true in the app data.

### What is the age rating for Kigen?

Kigen has an age rating of 4+, making it suitable for a wide range of users, including younger individuals.

### What are the in-app purchase options for Kigen?

While the app is free, it does offer in-app purchases. Specific details about what these purchases entail are not provided in the description.

## Version history (last 4 releases)

### 1.10 — 2025-02-04

To friends who always postpone tasks until the very last minute before the deadline,

This update includes layout adjustment.

### 1.02 — 2024-02-18

Hi! This update fixed some notification bugs.

### 1.01 — 2024-02-13

Hi! 
I added a date confirmation pop-up before registering tasks.

### 1.0 — 2024-02-04

No release notes.

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## More apps by Taito Iikura

- [LooSche](https://appshunter.io/ios/app/loosche/id1530317270)
- [Zubora \| 日々のタスク管理＆日記](https://appshunter.io/ios/app/zubora/id1536241619)
- [Minus - Simple Money Manager](https://appshunter.io/ios/app/minus-simple-money-manager/id1587548217)
- [DaySche \| Daily Task Manager](https://appshunter.io/ios/app/daysche-daily-task-manager/id1616386691)
- [Word Worth](https://appshunter.io/ios/app/word-worth/id6451778720)
- [Little Happiness](https://appshunter.io/ios/app/little-happiness/id6455934005)

All apps by Taito Iikura: https://appshunter.io/developer/1506013840

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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 2026-06-01.*