Hazmat Class A Exam Prep JP Downloads & RevenueHazmat Class A Exam Prep JP · App Store
危険物取扱者 甲種 試験対策 問題集
Not in any tracked top chart right now.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperRyouhei Azuma
CategoryBusiness
PriceFree
Released
Rating★ 4.0 (1)
Version1.1
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Hazmat Class A Exam Prep JP update history & changes
Last change · 3 events since 23 Jun 2026Full timeline ↓Full timeline · 3 events
- 🆕Hazmat Class A Exam Prep JP first spotted by AppInsider#83 in Top Free · Magazines & Newspapers · Japan
- 📦Hazmat Class A Exam Prep JP version 1.1Minor fixes.
- 🆕Hazmat Class A Exam Prep JP released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.0 ★
1 ratings
Measured
Hazmat Class A Exam Prep JP on the App Store
App details
App ID
6782110735
Publisher
Ryouhei Azuma
On the store since
Jun 2026
Under a year
Minimum OS
iOS 16+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
16 MB
Also listed in
Magazines & Newspapers
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.0 ★
1 ratings
Measured
Ratings
1
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Business apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Hazmat Class A Exam Prep JP
A study app for the Japan Hazardous Materials Handler (Class A / Kou) exam — the top-tier license covering all categories of hazardous materials. Study efficiently with practice questions and detailed explanations across all 3 subjects.
■ Subjects Covered
• Laws and regulations on hazardous materials
• Physics and chemistry
• Properties of hazardous materials, fire prevention, and extinguishing methods (all categories)
■ Study Modes
• Random practice (10 / 25 / 50 / 100 questions)
• Study by subject
• All questions in order (resume supported)
• Review incorrect answers
• Bookmarks and unanswered questions
■ Progress Tracking
• Automatic tracking of correct answer rate
• Subject-by-subject performance overview
Works completely offline — study anytime, anywhere.
■ Reference Sources
• Fire and Disaster Management Agency https://www.fdma.go.jp/
• Center for Fire and Disaster Prevention, Testing Division https://www.shoubo-shiken.or.jp/
※ This app is an independent study tool and is not affiliated with any examination body.
■ Subjects Covered
• Laws and regulations on hazardous materials
• Physics and chemistry
• Properties of hazardous materials, fire prevention, and extinguishing methods (all categories)
■ Study Modes
• Random practice (10 / 25 / 50 / 100 questions)
• Study by subject
• All questions in order (resume supported)
• Review incorrect answers
• Bookmarks and unanswered questions
■ Progress Tracking
• Automatic tracking of correct answer rate
• Subject-by-subject performance overview
Works completely offline — study anytime, anywhere.
■ Reference Sources
• Fire and Disaster Management Agency https://www.fdma.go.jp/
• Center for Fire and Disaster Prevention, Testing Division https://www.shoubo-shiken.or.jp/
※ This app is an independent study tool and is not affiliated with any examination body.
Latest updates
1.1
Minor fixes.
