# 19×19 暗算脳トレ vs 年表マスター

The clearest difference is in-app purchases: 19×19 暗算脳トレ at none against 年表マスター's 1. 19×19 暗算脳トレ also leads on iOS requirement (13.0 vs 18.0). 年表マスター's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. 年表マスター sells 1 one-off in-app purchase. 19×19 暗算脳トレ asks for nothing beyond the download.

19×19 暗算脳トレ ships an update every 9 days, 年表マスター weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 19×19 暗算脳トレ | 年表マスター |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 38 MB | 16 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Atsushi Isai](https://appshunter.io/developer/1881655484) | [Yoshitaka Tanaka](https://appshunter.io/developer/1510093015) |

## 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


### 年表マスター

[App page](https://appshunter.io/ios/app/id6770000809)

Learn history chronologically with this app. It offers flashcards and quizzes for Japanese and world history, allowing you to compare timelines and create your own historical records. Ideal for students and lifelong learners.

**Highlights:** Chronological learning with timelines, Flashcard memorization mode, Multiple-choice quiz mode, Timeline comparison feature, Customizable personal timelines, AI-generated event details (iOS 26+)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 年表マスターフルパック | $7.99 | 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 年表マスター free?

年表マスター is free to download, with in-app purchases available.

### Do 19×19 暗算脳トレ or 年表マスター have ads?

19×19 暗算脳トレ shows ads; 年表マスター does not.

### Which is updated more often, 19×19 暗算脳トレ or 年表マスター?

19×19 暗算脳トレ ships an update every 9 days, and 年表マスター weekly. Most recently, 19×19 暗算脳トレ was updated on October 28, 2026 and 年表マスター on October 31, 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.*