# Kigen ~ penguin task tracker vs e

The clearest difference is in-app purchases: e at none against Kigen ~ penguin task tracker's 3. e also leads on ads (none vs shown) and device support (3 vs 1). Kigen ~ penguin task tracker's advantage is update cadence (every 9 days vs monthly). On price there is nothing between them.

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

Kigen ~ penguin task tracker ships an update every 9 days, e monthly. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Kigen ~ penguin task tracker | e |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 69 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Taito Iikura](https://appshunter.io/developer/1506013840) | [NEXUS K.K](https://appshunter.io/developer/1857900520) |

## What reviewers say

### Kigen ~ penguin task tracker

[App page](https://appshunter.io/ios/app/kigen-penguin-task-tracker/id6477283404)

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

**In-app purchases (3)**

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


### e

[App page](https://appshunter.io/ios/app/e-mu/id6756001328)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kigen ~ penguin task tracker free?

Kigen ~ penguin task tracker is free to download, with in-app purchases available.

### Is e free?

e is free to download, with no in-app purchases.

### Do Kigen ~ penguin task tracker or e have ads?

Kigen ~ penguin task tracker shows ads; e does not.

### Which is updated more often, Kigen ~ penguin task tracker or e?

Kigen ~ penguin task tracker ships an update every 9 days, and e monthly. Most recently, Kigen ~ penguin task tracker was updated on October 5, 2026 and e on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*