# マハラジャ算数 vs Mental Math for Work

The clearest difference is in-app purchases: マハラジャ算数 at none against Mental Math for Work's 2. マハラジャ算数 also leads on update cadence (every 3 days vs every 9 days). Mental Math for Work's advantage is ads (none vs shown). On price, device support and iOS requirement 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. マハラジャ算数 asks for nothing beyond the download.

マハラジャ算数 ships an update every 3 days, Mental Math for Work every 9 days. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | マハラジャ算数 | Mental Math for Work |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 9 days |
| Size | 27 MB | 15 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yutaro Takei](https://appshunter.io/developer/1793329405) | [Shota Morioka](https://appshunter.io/developer/483674380) |

## What reviewers say

### マハラジャ算数

[App page](https://appshunter.io/ios/app/id6762497944)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is マハラジャ算数 free?

マハラジャ算数 is free to download, with no in-app purchases.

### Is Mental Math for Work free?

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

### Do マハラジャ算数 or Mental Math for Work have ads?

マハラジャ算数 shows ads; Mental Math for Work does not.

### Which is updated more often, マハラジャ算数 or Mental Math for Work?

マハラジャ算数 ships an update every 3 days, and Mental Math for Work every 9 days. Most recently, マハラジャ算数 was updated on October 3, 2026 and Mental Math for Work on October 14, 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.*