Comparison

Kigen ~ penguin task tracker vs ToDo Tab

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kigen ~ penguin task tracker

This app helps you manage tasks and meet deadlines with a simple interface. It uses color-coded indicators for due dates and a punctuality level system to motivate users. Receive timely notifications to stay on track.

Highlights
  • 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
Read full description

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!

About

ToDo Tab

Features
Read full description

Thank you for using our service. ToDo Tab is a ToDo app that lets you manage your tasks using tabs and track deadlines. It’s designed not only with the intuitive clarity of the standard iPhone UI in mind, but also with a focus on delivering a distinctive and satisfying user experience. In addition to tabs and deadlines, the app offers many other useful features: Convenient Features: Register todos directly from the launch screen. Add deadlines to tasks. View lists of tasks with upcoming or overdue deadlines. Easily move tabs or todos by dragging. Set colors for tabs for enhanced clarity. Supports dark mode. Vertically arranged tabs for easy viewing. Customize tab widths. Attach notes to todos.

Screenshots

Kigen ~ penguin task tracker4 screens
ToDo Tab4 screens

Verdict

The call

The clearest difference is in-app purchases: ToDo Tab at none against Kigen ~ penguin task tracker's 3. ToDo Tab also leads on update cadence (every 4 days vs every 9 days). Kigen ~ penguin task tracker's advantage is iOS requirement (16.6 vs 18.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Kigen ~ penguin task tracker sells 3 one-off in-app purchases. ToDo Tab asks for nothing beyond the download.

UpkeepUpdate frequency

Kigen ~ penguin task tracker ships an update every 9 days, ToDo Tab every 4 days. The most recent releases landed on September 18, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 5 level
Kigen ~ penguin task tracker versus ToDo Tab: the parameters behind the verdict, then further details
ParameterKigen ~ penguin task trackerToDo Tab
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 9 daysEvery 4 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.6 — better18.0
Further details — not scored
Size20 MB6 MB
Age rating4+4+
DeveloperTaito IikuraMasaya Sugino

In-app purchases

3 purchases

Kigen ~ penguin task tracker

One-time3
  • Support Kigen App$1.99
  • Support Kigen App$4.99
  • Ads Free Plan$14.99
None

ToDo Tab

No in-app purchases

Questions

Is Kigen ~ penguin task tracker free?
Kigen ~ penguin task tracker is free to download, with in-app purchases available.
Is ToDo Tab free?
ToDo Tab is free to download, with no in-app purchases.
Do Kigen ~ penguin task tracker or ToDo Tab have ads?
Both Kigen ~ penguin task tracker and ToDo Tab show ads.
Which is updated more often, Kigen ~ penguin task tracker or ToDo Tab?
Kigen ~ penguin task tracker ships an update every 9 days, and ToDo Tab every 4 days. Most recently, Kigen ~ penguin task tracker was updated on September 18, 2026 and ToDo Tab on September 14, 2026.

Other comparisons