# 速算トレイン vs 19×19 暗算脳トレ

The clearest difference is update cadence: 19×19 暗算脳トレ at every 9 days against 速算トレイン's every 2 months. 速算トレイン's advantage is iOS requirement (11.0 vs 13.0). 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.

速算トレイン ships an update every 2 months, 19×19 暗算脳トレ every 9 days. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 速算トレイン | 19×19 暗算脳トレ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 41 MB | 38 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yosuke Ebina](https://appshunter.io/developer/1565319023) | [Atsushi Isai](https://appshunter.io/developer/1881655484) |

## What reviewers say

### 速算トレイン

[App page](https://appshunter.io/ios/app/id1620172329)

**Features:** macOS Compatibility

**In-app purchases:** none


### 19×19 暗算脳トレ

[App page](https://appshunter.io/ios/app/1919/id6763848289)

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

**In-app purchases:** none


## Frequently asked questions

### Is 速算トレイン free?

速算トレイン is free to download, with no in-app purchases.

### Is 19×19 暗算脳トレ free?

19×19 暗算脳トレ is free to download, with no in-app purchases.

### Do 速算トレイン or 19×19 暗算脳トレ have ads?

Both 速算トレイン and 19×19 暗算脳トレ show ads.

### Which is updated more often, 速算トレイン or 19×19 暗算脳トレ?

速算トレイン ships an update every 2 months, and 19×19 暗算脳トレ every 9 days. Most recently, 速算トレイン was updated on November 7, 2026 and 19×19 暗算脳トレ on October 28, 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.*