# フラッシュ暗算（公式） vs Highspeed Math

The clearest difference is price: Highspeed Math at Free against フラッシュ暗算（公式）'s $3.99. Highspeed Math also leads on rating (3.0 vs 2.0) and update cadence (monthly vs every 15 months). フラッシュ暗算（公式）'s advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 11.0). On ratings volume, ads and device support there is nothing between them.

Highspeed Math is free to download; フラッシュ暗算（公式） costs $3.99 up front. Highspeed Math sells 1 one-off in-app purchase. フラッシュ暗算（公式） asks for nothing beyond the download.

Highspeed Math holds the better App Store score, 3.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

フラッシュ暗算（公式） ships an update every 15 months, Highspeed Math monthly. The most recent releases landed on October 26, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | フラッシュ暗算（公式） | Highspeed Math |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/id421826349/reviews) | **[3.0 (1 ratings)](https://appshunter.io/ios/app/highspeed-math/id6449271751/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 223 MB |
| Requires iOS | **7.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yuji Miyamoto](https://appshunter.io/developer/417390646) | [Fantamstick](https://appshunter.io/developer/563146308) |

## What reviewers say

### フラッシュ暗算（公式）

[App page](https://appshunter.io/ios/app/id421826349)

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

**In-app purchases:** none


### Highspeed Math

[App page](https://appshunter.io/ios/app/highspeed-math/id6449271751)

Engage in an exciting arithmetic challenge that transforms learning math into a thrilling adventure. Solve equations against the clock, defeat monsters, and collect cards and items to enhance your gameplay. This app makes mastering arithmetic fun and intellectually stimulating for all ages.

**Highlights:** Arithmetic challenges against the clock, Defeat monsters by solving equations, Collect character and item cards, Unlock unique vehicles, Curriculum-aligned challenges, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ハイスピード　全コース開放 | $9.99 | one-time |


## Frequently asked questions

### Is フラッシュ暗算（公式） free?

フラッシュ暗算（公式） costs $3.99, with no in-app purchases.

### Is Highspeed Math free?

Highspeed Math is free to download, with in-app purchases available.

### Which has better reviews, フラッシュ暗算（公式） or Highspeed Math?

Highspeed Math is rated higher. フラッシュ暗算（公式） averages 2.0 out of 5 from 1 ratings, while Highspeed Math averages 3.0 from 1 ratings.

### Do フラッシュ暗算（公式） or Highspeed Math have ads?

Neither フラッシュ暗算（公式） nor Highspeed Math shows ads.

### Which is updated more often, フラッシュ暗算（公式） or Highspeed Math?

フラッシュ暗算（公式） ships an update every 15 months, and Highspeed Math monthly. Most recently, フラッシュ暗算（公式） was updated on October 26, 2026 and Highspeed Math on October 13, 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.*