# Flash Mental Math (Anzan) vs シンプルFLASH暗算

The clearest difference is in-app purchases: シンプルFLASH暗算 at none against Flash Mental Math (Anzan)'s 1. Flash Mental Math (Anzan)'s advantage is update cadence (weekly vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Flash Mental Math (Anzan) sells 1 in-app purchase, starting at $0.99 per month. シンプルFLASH暗算 asks for nothing beyond the download.

Flash Mental Math (Anzan) ships an update weekly, シンプルFLASH暗算 fortnightly. The most recent releases landed on September 5, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Flash Mental Math (Anzan) | シンプルFLASH暗算 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/flash-mental-math-anzan/id6749636736/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 4 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SIC Company Limited](https://appshunter.io/developer/1800842356) | [TSUKASA YONAHA](https://appshunter.io/developer/1835823966) |

## What reviewers say

### Flash Mental Math (Anzan)

[App page](https://appshunter.io/ios/app/flash-mental-math-anzan/id6749636736)

This app helps users of all ages improve their mental math and calculation speed. Numbers flash on screen briefly, training quick thinking and concentration. It's ideal for children preparing for abacus certification, students needing math test prep, or adults seeking brain training.

**Highlights:** Flash number display for quick thinking, Adjustable difficulty levels, Global and classroom rankings, No account registration required, Supports multiple languages, Intuitive interface for children

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |


### シンプルFLASH暗算

[App page](https://appshunter.io/ios/app/flash/id6751562239)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flash Mental Math (Anzan) free?

Flash Mental Math (Anzan) is free to download, with in-app purchases available.

### Is シンプルFLASH暗算 free?

シンプルFLASH暗算 is free to download, with no in-app purchases.

### Do Flash Mental Math (Anzan) or シンプルFLASH暗算 have ads?

Both Flash Mental Math (Anzan) and シンプルFLASH暗算 show ads.

### Which is updated more often, Flash Mental Math (Anzan) or シンプルFLASH暗算?

Flash Mental Math (Anzan) ships an update weekly, and シンプルFLASH暗算 fortnightly. Most recently, Flash Mental Math (Anzan) was updated on September 5, 2026 and シンプルFLASH暗算 on September 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.*