# Mental Math for Work vs 航空大サプリ

The clearest difference is in-app purchases: 航空大サプリ at none against Mental Math for Work's 2. 航空大サプリ also leads on iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Mental Math for Work sells 2 in-app purchases, starting at $1.99 per month. 航空大サプリ asks for nothing beyond the download.

## The numbers

| Metric | Mental Math for Work | 航空大サプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Size | 15 MB | 32 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shota Morioka](https://appshunter.io/developer/483674380) | [KAZUHIRO ISHIBASHI](https://appshunter.io/developer/1865380440) |

## What reviewers say

### Mental Math for Work

[App page](https://appshunter.io/ios/app/mental-math-for-work/id6766879948)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Lifetime | $9.99 | one-time |


### 航空大サプリ

[App page](https://appshunter.io/ios/app/id6771634622)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math for Work free?

Mental Math for Work is free to download, with in-app purchases available.

### Is 航空大サプリ free?

航空大サプリ is free to download, with no in-app purchases.

### Do Mental Math for Work or 航空大サプリ have ads?

Neither Mental Math for Work nor 航空大サプリ shows ads.

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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.*