# フラッシュ計算 vs シンプルFLASH暗算

The clearest difference is update cadence: シンプルFLASH暗算 at fortnightly against フラッシュ計算's every 14 months. フラッシュ計算's advantage is iOS requirement (11.0 vs 15.6). 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.

フラッシュ計算 ships an update every 14 months, シンプルFLASH暗算 fortnightly. The most recent releases landed on May 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | フラッシュ計算 | シンプルFLASH暗算 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 14 months | **Fortnightly** |
| Size | 52 MB | 4 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [hideaki fukumura](https://appshunter.io/developer/1629984757) | [TSUKASA YONAHA](https://appshunter.io/developer/1835823966) |

## What reviewers say

### フラッシュ計算

[App page](https://appshunter.io/ios/app/id1637786591)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 フラッシュ計算 free?

フラッシュ計算 is free to download, with no in-app purchases.

### 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 フラッシュ計算 or シンプルFLASH暗算 have ads?

Both フラッシュ計算 and シンプルFLASH暗算 show ads.

### Which is updated more often, フラッシュ計算 or シンプルFLASH暗算?

フラッシュ計算 ships an update every 14 months, and シンプルFLASH暗算 fortnightly. Most recently, フラッシュ計算 was updated on May 16, 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.*