# 3択犬 vs 脳トレ！空港危機一髪

The clearest difference is update cadence: 脳トレ！空港危機一髪 at every 6 weeks against 3択犬's every 12 months. 脳トレ！空港危機一髪 also leads on review sentiment (25% vs 0%). 3択犬's advantage is iOS requirement (11.0 vs 14.0). 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.

3択犬 ships an update every 12 months, 脳トレ！空港危機一髪 every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 3択犬 | 脳トレ！空港危機一髪 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 12 months | **Every 6 weeks** |
| Monetization | Ad-supported | — |
| Size | 121 MB | 126 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ZERONE](https://appshunter.io/developer/1708775781) | [FUKUROU](https://appshunter.io/developer/1603805098) |

## What reviewers say

### 3択犬

[App page](https://appshunter.io/ios/app/3/id1560776564)

Engage in a daily brain-training game with multiple-choice questions. Select the correct answer from three options to keep your mind sharp and get a brain age diagnosis. It's a simple and fun way to exercise your cognitive skills.

**Highlights:** Multiple-choice questions, Daily brain training, Brain age diagnosis, Simple tap interface, Cognitive exercise

**Features:** macOS Compatibility

**In-app purchases:** none


### 脳トレ！空港危機一髪

[App page](https://appshunter.io/ios/app/id1561957451)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3択犬 free?

3択犬 is free to download, with no in-app purchases.

### Is 脳トレ！空港危機一髪 free?

脳トレ！空港危機一髪 is free to download, with no in-app purchases.

### Do 3択犬 or 脳トレ！空港危機一髪 have ads?

Both 3択犬 and 脳トレ！空港危機一髪 show ads.

### Which is updated more often, 3択犬 or 脳トレ！空港危機一髪?

3択犬 ships an update every 12 months, and 脳トレ！空港危機一髪 every 6 weeks. Most recently, 3択犬 was updated on November 3, 2026 and 脳トレ！空港危機一髪 on November 3, 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.*