# 優しい色合いのフラッシュ暗算 vs Flash Mental Math (Anzan)

The clearest difference is in-app purchases: 優しい色合いのフラッシュ暗算 at none against Flash Mental Math (Anzan)'s 1. Flash Mental Math (Anzan)'s advantage is update cadence (every 10 days vs every 3 weeks). 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. 優しい色合いのフラッシュ暗算 asks for nothing beyond the download.

優しい色合いのフラッシュ暗算 ships an update every 3 weeks, Flash Mental Math (Anzan) every 10 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 優しい色合いのフラッシュ暗算 | Flash Mental Math (Anzan) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/flash-mental-math-anzan/id6749636736/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 54 MB |
| Requires iOS | 15.3 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manae Ishida](https://appshunter.io/developer/1617075502) | [SIC Company Limited](https://appshunter.io/developer/1800842356) |

## What reviewers say

### 優しい色合いのフラッシュ暗算

[App page](https://appshunter.io/ios/app/id1617075500)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 優しい色合いのフラッシュ暗算 free?

優しい色合いのフラッシュ暗算 is free to download, with no in-app purchases.

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

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

### Do 優しい色合いのフラッシュ暗算 or Flash Mental Math (Anzan) have ads?

Both 優しい色合いのフラッシュ暗算 and Flash Mental Math (Anzan) show ads.

### Which is updated more often, 優しい色合いのフラッシュ暗算 or Flash Mental Math (Anzan)?

優しい色合いのフラッシュ暗算 ships an update every 3 weeks, and Flash Mental Math (Anzan) every 10 days. Most recently, 優しい色合いのフラッシュ暗算 was updated on November 3, 2026 and Flash Mental Math (Anzan) on November 5, 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.*