# Mental Math vs 速算トレイン

The clearest difference is update cadence: Mental Math at every 6 days against 速算トレイン's every 2 months. 速算トレイン's advantage is iOS requirement (11.0 vs 13.0). 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.

Mental Math ships an update every 6 days, 速算トレイン every 2 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Mental Math | 速算トレイン |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/mental-math-boost-cal-skills/id1572014520/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 67 MB | 41 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yudai Kitano](https://appshunter.io/developer/1529380991) | [Yosuke Ebina](https://appshunter.io/developer/1565319023) |

## What reviewers say

### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-boost-cal-skills/id1572014520)

Train your calculation skills with this app by solving math problems against the clock. Customize the time limit and number of questions for a personalized challenge. Review your results to track progress and improve your math abilities.

**Highlights:** Solve math problems against a time limit, Customize time limit and number of problems, Review calculation results, Simple and comfortable user interface, Gaming experience for spare time

**In-app purchases:** none


### 速算トレイン

[App page](https://appshunter.io/ios/app/id1620172329)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math free?

Mental Math is free to download, with no in-app purchases.

### Is 速算トレイン free?

速算トレイン is free to download, with no in-app purchases.

### Do Mental Math or 速算トレイン have ads?

Both Mental Math and 速算トレイン show ads.

### Which is updated more often, Mental Math or 速算トレイン?

Mental Math ships an update every 6 days, and 速算トレイン every 2 months. Most recently, Mental Math was updated on November 3, 2026 and 速算トレイン on October 27, 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.*