# フラッシュ暗算（あそんでまなぶ！シリーズ） vs Flash Mental Math (Anzan)

The clearest difference is review sentiment: Flash Mental Math (Anzan) at 100% against フラッシュ暗算（あそんでまなぶ！シリーズ）'s 60%. Flash Mental Math (Anzan) also leads on update cadence (every 10 days vs every 32 months). フラッシュ暗算（あそんでまなぶ！シリーズ）'s advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. フラッシュ暗算（あそんでまなぶ！シリーズ） sells 2 one-off in-app purchases and Flash Mental Math (Anzan) sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

フラッシュ暗算（あそんでまなぶ！シリーズ） ships an update every 32 months, Flash Mental Math (Anzan) every 10 days. The most recent releases landed on October 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | フラッシュ暗算（あそんでまなぶ！シリーズ） | 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 | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 32 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 54 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UNI-TY INC.](https://appshunter.io/developer/433109975) | [SIC Company Limited](https://appshunter.io/developer/1800842356) |

## What reviewers say

### フラッシュ暗算（あそんでまなぶ！シリーズ）

[App page](https://appshunter.io/ios/app/id1142523656)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |
| 回数制限解除 | $2.99 | one-time |


### 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 フラッシュ暗算（あそんでまなぶ！シリーズ） free?

フラッシュ暗算（あそんでまなぶ！シリーズ） is free to download, with in-app purchases available.

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

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

### Do フラッシュ暗算（あそんでまなぶ！シリーズ） or Flash Mental Math (Anzan) have ads?

Both フラッシュ暗算（あそんでまなぶ！シリーズ） and Flash Mental Math (Anzan) show ads.

### Which is updated more often, フラッシュ暗算（あそんでまなぶ！シリーズ） or Flash Mental Math (Anzan)?

フラッシュ暗算（あそんでまなぶ！シリーズ） ships an update every 32 months, and Flash Mental Math (Anzan) every 10 days. Most recently, フラッシュ暗算（あそんでまなぶ！シリーズ） was updated on October 9, 2026 and Flash Mental Math (Anzan) on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*