# フラッシュ暗算練習 vs 登降園システム

The clearest difference is ads: 登降園システム at none against フラッシュ暗算練習's shown. フラッシュ暗算練習's advantage is update cadence (every 9 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

フラッシュ暗算練習 ships an update every 9 days, 登降園システム every 2 months. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | フラッシュ暗算練習 | 登降園システム |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 months |
| Size | 28 MB | 25 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Katsuyuki Hayashi](https://appshunter.io/developer/1597263179) | [ASAHI POWER SERVICE K.K.](https://appshunter.io/developer/1501635645) |

## What reviewers say

### フラッシュ暗算練習

[App page](https://appshunter.io/ios/app/id6477322637)

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

**In-app purchases:** none


### 登降園システム

[App page](https://appshunter.io/ios/app/id6504741605)

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

**In-app purchases:** none


## Frequently asked questions

### Is フラッシュ暗算練習 free?

フラッシュ暗算練習 is free to download, with no in-app purchases.

### Is 登降園システム free?

登降園システム is free to download, with no in-app purchases.

### Do フラッシュ暗算練習 or 登降園システム have ads?

フラッシュ暗算練習 shows ads; 登降園システム does not.

### Which is updated more often, フラッシュ暗算練習 or 登降園システム?

フラッシュ暗算練習 ships an update every 9 days, and 登降園システム every 2 months. Most recently, フラッシュ暗算練習 was updated on October 30, 2026 and 登降園システム on October 27, 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.*