# 危険物乙4 問題集 — 法令・物化・性消を10分ずつ

> 法令・物化・性消を10分ずつ (iPhone/iPad app by RIVERSHIP.)

- Source: https://appshunter.io/ios/app/4/id6785840919 (this page in markdown: same URL + `.md`)
- Developer: [RIVERSHIP](https://appshunter.io/developer/6780804499)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 14 MB
- Languages: Japanese
- Released: 2026-07-01
- Data updated: 2026-10-10
- User reviews in markdown: https://appshunter.io/ios/app/4/id6785840919/reviews.md

## What is 危険物乙4 問題集?

危険物取扱者 乙種第4類の合格に必要な力を、最短ルートで身につける問題集アプリです。

■ 合格から逆算
法令・基礎物理化学・性質消火の3科目それぞれの正答率を可視化。各科目60%の合格ラインまでの距離が常にわかります。

■ 弱点を間隔反復
間違えた問題は最適なタイミングで自動再出題。忘れる前に復習して定着させます。

■ 本番形式の模試
法令15・物化10・性消10の35問構成で本番をシミュレーション。科目別に合否を判定します。

オフライン完全対応・追加課金なしの買い切り。

※公開されている出題範囲（シラバス）に基づくオリジナル問題です。実際の試験問題は収録していません。

利用規約（EULA）: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/


## Version history (last 5 releases)

### 1.0.9 — 2026-09-24

Minor improvements.

### 1.0.8 — 2026-09-16

• Report a problem: flag a wrong answer or explanation right from the explanation, by email or share sheet.
• Retry missed questions: a new home-screen button drills only the questions you got wrong.
• Weakest topics: your three weakest topics now appear on the home screen once you've answered 5+ questions in a topic.
• Fixed: the Missed list in the Review box was always empty.

### 1.0.7 — 2026-09-04

Added a Home Screen widget. You can see how many questions are left and today's progress without opening the app.

### 1.0.6 — 2026-08-18

No release notes.

### 1.0.5 — 2026-08-14

No release notes.

## More apps by RIVERSHIP

- [集中タイマー ポモ育て](https://appshunter.io/ios/app/id6780804497)
- [RestMix: Sleep Sound Mixer](https://appshunter.io/ios/app/restmix-sleep-sound-mixer/id6781571895)
- [Tilestreak: Habit Tracker Grid](https://appshunter.io/ios/app/tilestreak-habit-tracker-grid/id6781572330)
- [Dotmood: Mood & Year in Pixels](https://appshunter.io/ios/app/dotmood-mood-and-year-in-pixels/id6781572756)
- [Widgnest: Widget Maker & Lock](https://appshunter.io/ios/app/widgnest-widget-maker-and-lock/id6781572802)
- [Solo Focus: ADHD Task Timer](https://appshunter.io/ios/app/solo-focus-adhd-task-timer/id6781573465)

All apps by RIVERSHIP: https://appshunter.io/developer/6780804499

## Related topics

[4ever young](https://appshunter.io/ios/topics/4ever-young)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-10.*