# シンプル「ABCDタスク管理」 vs TaskTetra

The clearest difference is update cadence: シンプル「ABCDタスク管理」 at every 3 months against TaskTetra's every 15 months. TaskTetra's advantage is iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. シンプル「ABCDタスク管理」 sells 1 one-off in-app purchase and TaskTetra sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

シンプル「ABCDタスク管理」 ships an update every 3 months, TaskTetra every 15 months. The most recent releases landed on August 23, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | シンプル「ABCDタスク管理」 | TaskTetra |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 15 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tomohiro nakano](https://appshunter.io/developer/1179284958) | [Koya Nambo](https://appshunter.io/developer/1633778504) |

## What reviewers say

### シンプル「ABCDタスク管理」

[App page](https://appshunter.io/ios/app/abcd/id1516079594)

Prioritize tasks using the ABCD matrix based on urgency and importance. Organize tasks into customizable categories, view priorities at a glance, and secure your data with passcode locks. Offers theme customization and ad removal via in-app purchase.

**Highlights:** ABCD matrix for task prioritization, Task categorization and locking, Detailed task creation and editing, Customizable app themes and colors, Passcode protection for app and categories, Ad removal via in-app purchase

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |


### TaskTetra

[App page](https://appshunter.io/ios/app/tasktetra-todo-management-app/id6460933735)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is シンプル「ABCDタスク管理」 free?

シンプル「ABCDタスク管理」 is free to download, with in-app purchases available.

### Is TaskTetra free?

TaskTetra is free to download, with in-app purchases available.

### Do シンプル「ABCDタスク管理」 or TaskTetra have ads?

Both シンプル「ABCDタスク管理」 and TaskTetra show ads.

### Which is updated more often, シンプル「ABCDタスク管理」 or TaskTetra?

シンプル「ABCDタスク管理」 ships an update every 3 months, and TaskTetra every 15 months. Most recently, シンプル「ABCDタスク管理」 was updated on August 23, 2026 and TaskTetra on September 27, 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.*