AppMarketSpy › Education › 危険物スタディ
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App info
- Developer
- manabu Shigematsu
- Category
- Education
- Released
- Sep 30, 2026
- Version
- 1.2 (Oct 23, 2026)
- Price
- Free
- Size
- 19.9 MB
- Requires
- iOS 15.0
- Age rating
- 4+
- Languages
- Japanese
In-app purchases
| 危険物プレミアム（月額） | $5.99 |
Current prices, App Store US.
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About 危険物スタディ
Prepare for the Japanese Hazardous Materials Engineer examination with qualification-specific practice, explanations and offline study notes. Choose Class A, Class B categories 1–6, or Class C. FREE STUDY Choose a subject and practice ten questions at a time. Resume unfinished sessions, review mistakes, and track progress on your device. Questions are original learning materials, not official past examination questions. OPTIONAL OTSU-4 PREMIUM The monthly subscription includes three original Otsu-4 mock exams: 105 questions in total, explanations for all 525 answer choices, a 120-minute timer per exam, subject scores, and 35 review cards. It also includes 48 self-check workbook exercises: 32 chemistry exercises across 8 chapters and 16 combustion/fire-extinguishing exercises across 4 chapters, with flow diagrams, comparison tables and worked examples. Workbook exercises are not…
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