# 日本史ざっくり暗記！「重要用語と年号」学習アプリ vs Parallel Chronology

The clearest difference is rating: 日本史ざっくり暗記！「重要用語と年号」学習アプリ at 4.5 against Parallel Chronology's 1.0. 日本史ざっくり暗記！「重要用語と年号」学習アプリ also leads on update cadence (every 2 months vs every 9 months). Parallel Chronology's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, ratings volume and iOS requirement there is nothing between them.

Both are free to download. 日本史ざっくり暗記！「重要用語と年号」学習アプリ sells 3 one-off in-app purchases. Parallel Chronology asks for nothing beyond the download.

日本史ざっくり暗記！「重要用語と年号」学習アプリ holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

日本史ざっくり暗記！「重要用語と年号」学習アプリ ships an update every 2 months, Parallel Chronology every 9 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 日本史ざっくり暗記！「重要用語と年号」学習アプリ | Parallel Chronology |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/id1001141506/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/parallel-chronology/id1462606267/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 64.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | — | Free |
| Size | 13 MB | 12 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Keiko Yukawa](https://appshunter.io/developer/719596665) | [Neusara LLC](https://appshunter.io/developer/1462606266) |

## What reviewers say

### 日本史ざっくり暗記！「重要用語と年号」学習アプリ

[App page](https://appshunter.io/ios/app/id1001141506)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告表示削除 | $1.99 | one-time |
| 単語帳作成数無制限 | $1.99 | one-time |
| 単語登録数無制限 | $1.99 | one-time |


### Parallel Chronology

[App page](https://appshunter.io/ios/app/parallel-chronology/id1462606267)

Explore historical events and fictional timelines side-by-side. Compare information across different categories and time periods, from the dawn of the universe to the present and beyond. Discover new insights by juxtaposing diverse data points on an infinitely scrolling timeline.

**Highlights:** Side-by-side information display, Story units for comparative analysis, Infinite scroll timeline (99.9 billion BC to 99.9 billion AD), Tool for historical discovery, Supports custom fictional data, Links to Wikipedia for details, Universal device support (iPhone/iPad)

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

**In-app purchases:** none


## Frequently asked questions

### Is 日本史ざっくり暗記！「重要用語と年号」学習アプリ free?

日本史ざっくり暗記！「重要用語と年号」学習アプリ is free to download, with in-app purchases available.

### Is Parallel Chronology free?

Parallel Chronology is free to download, with no in-app purchases.

### Which has better reviews, 日本史ざっくり暗記！「重要用語と年号」学習アプリ or Parallel Chronology?

日本史ざっくり暗記！「重要用語と年号」学習アプリ is rated higher. 日本史ざっくり暗記！「重要用語と年号」学習アプリ averages 4.5 out of 5 from 2 ratings, while Parallel Chronology averages 1.0 from 1 ratings.

### Do 日本史ざっくり暗記！「重要用語と年号」学習アプリ or Parallel Chronology have ads?

日本史ざっくり暗記！「重要用語と年号」学習アプリ shows ads; Parallel Chronology does not.

### Which is updated more often, 日本史ざっくり暗記！「重要用語と年号」学習アプリ or Parallel Chronology?

日本史ざっくり暗記！「重要用語と年号」学習アプリ ships an update every 2 months, and Parallel Chronology every 9 months. Most recently, 日本史ざっくり暗記！「重要用語と年号」学習アプリ was updated on November 1, 2026 and Parallel Chronology on November 7, 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.*