# 脳疲労・ストレススキャン vs TaskQuest!

The clearest difference is update cadence: TaskQuest! at every 4 days against 脳疲労・ストレススキャン's every 4 months. 脳疲労・ストレススキャン's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

脳疲労・ストレススキャン ships an update every 4 months, TaskQuest! every 4 days. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 脳疲労・ストレススキャン | TaskQuest! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Size | 15 MB | 62 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [疲労科学研究所](https://appshunter.io/developer/1143093824) | [takahashi masaki](https://appshunter.io/developer/1855419759) |

## What reviewers say

### 脳疲労・ストレススキャン

[App page](https://appshunter.io/ios/app/id1613298005)

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

**In-app purchases:** none


### TaskQuest!

[App page](https://appshunter.io/ios/app/taskquest/id6755669478)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 脳疲労・ストレススキャン free?

脳疲労・ストレススキャン is free to download, with no in-app purchases.

### Is TaskQuest! free?

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

### Do 脳疲労・ストレススキャン or TaskQuest! have ads?

Neither 脳疲労・ストレススキャン nor TaskQuest! shows ads.

### Which is updated more often, 脳疲労・ストレススキャン or TaskQuest!?

脳疲労・ストレススキャン ships an update every 4 months, and TaskQuest! every 4 days. Most recently, 脳疲労・ストレススキャン was updated on October 9, 2026 and TaskQuest! on October 13, 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.*