# アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 vs 進数ノック

The clearest difference is ads: 進数ノック at none against アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集's shown. 進数ノック also leads on update cadence (daily vs weekly). アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 sells 10 one-off in-app purchases and 進数ノック sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 ships an update weekly, 進数ノック daily. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 | 進数ノック |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 45 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Himeka Saito](https://appshunter.io/developer/6819685777) | [Hikaru Hakata](https://appshunter.io/developer/6796209163) |

## What reviewers say

### アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集

[App page](https://appshunter.io/ios/app/id6782866171)

Master inorganic chemistry for university entrance exams with this comprehensive question-and-answer app. It covers 12 fields with 638 questions and detailed explanations, offering spaced repetition for effective memorization. Practice and track your progress to reduce errors in your exams.

**Highlights:** 12 fields and 638 questions, Detailed explanations for all questions, Spaced repetition for memorization, Progress tracking and statistics, Daily study reminders, Free basic content

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 錯イオン分野アンロック | $0.49 | one-time |
| 無機化合物総合分野アンロック | $0.49 | one-time |
| テーマ：ダーク | $0.49 | one-time |
| テーマ：さくら | $0.49 | one-time |
| テーマ：オーシャン | $0.49 | one-time |
| テーマ：もみじ | $0.49 | one-time |
| 音声で暗記（全語） | $1.99 | one-time |
| 全問題解放・広告削除 | $2.99 | one-time |
| 予想問題 セット2〜5 | $2.99 | one-time |
| フル解放パック | $5.99 | one-time |


### 進数ノック

[App page](https://appshunter.io/ios/app/radixdrill/id6796209161)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $1.99 | one-time |


## Frequently asked questions

### Is アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 free?

アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 is free to download, with in-app purchases available.

### Is 進数ノック free?

進数ノック is free to download, with in-app purchases available.

### Do アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 or 進数ノック have ads?

アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 shows ads; 進数ノック does not.

### Which is updated more often, アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 or 進数ノック?

アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 ships an update weekly, and 進数ノック daily. Most recently, アプ問 無機化学｜共通テスト・大学受験 一問一答＆問題集 was updated on October 29, 2026 and 進数ノック 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.*