# 19×19 暗算脳トレ vs ガチ2桁九九

The clearest difference is in-app purchases: 19×19 暗算脳トレ at none against ガチ2桁九九's 1. ガチ2桁九九's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ガチ2桁九九 sells 1 one-off in-app purchase. 19×19 暗算脳トレ asks for nothing beyond the download.

## The numbers

| Metric | 19×19 暗算脳トレ | ガチ2桁九九 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | — |
| Size | 38 MB | 24 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atsushi Isai](https://appshunter.io/developer/1881655484) | [kotobaz](https://appshunter.io/developer/1634727152) |

## What reviewers say

### 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


### ガチ2桁九九

[App page](https://appshunter.io/ios/app/2/id6777702804)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム解放 | $2.99 | one-time |


## Frequently asked questions

### 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.

### Is ガチ2桁九九 free?

ガチ2桁九九 is free to download, with in-app purchases available.

### Do 19×19 暗算脳トレ or ガチ2桁九九 have ads?

19×19 暗算脳トレ shows ads; ガチ2桁九九 does not.

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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.*