# Brain teaser calculator vs マーケ単：マーケティング単語帳

The clearest difference is in-app purchases: Brain teaser calculator at none against マーケ単：マーケティング単語帳's 1. マーケ単：マーケティング単語帳's advantage is iOS requirement (13.4 vs 15.8.3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. マーケ単：マーケティング単語帳 sells 1 one-off in-app purchase. Brain teaser calculator asks for nothing beyond the download.

Brain teaser calculator ships an update every 2 weeks, マーケ単：マーケティング単語帳 every 3 weeks. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Brain teaser calculator | マーケ単：マーケティング単語帳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 36 MB | 35 MB |
| Requires iOS | 15.8.3 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Creatopia Inc.](https://appshunter.io/developer/1523447963) |

## What reviewers say

### Brain teaser calculator

[App page](https://appshunter.io/ios/app/brain-teaser-calculator/id6499087643)

**Features:** macOS Compatibility

**In-app purchases:** none


### マーケ単：マーケティング単語帳

[App page](https://appshunter.io/ios/app/id6504324062)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| マーケティング単語帳プレミアム会員 | $19.99 | one-time |


## Frequently asked questions

### Is Brain teaser calculator free?

Brain teaser calculator is free to download, with no in-app purchases.

### Is マーケ単：マーケティング単語帳 free?

マーケ単：マーケティング単語帳 is free to download, with in-app purchases available.

### Do Brain teaser calculator or マーケ単：マーケティング単語帳 have ads?

Both Brain teaser calculator and マーケ単：マーケティング単語帳 show ads.

### Which is updated more often, Brain teaser calculator or マーケ単：マーケティング単語帳?

Brain teaser calculator ships an update every 2 weeks, and マーケ単：マーケティング単語帳 every 3 weeks. Most recently, Brain teaser calculator was updated on October 18, 2026 and マーケ単：マーケティング単語帳 on October 11, 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.*