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Japan Hazmat Handler Exam Prep

Name: Japan Hazmat Handler Exam Prep
Author: tanocee, Inc.

Class 4 (Otsu 4) Practice Q&A

tanocee, Inc. · Education

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Japan Hazmat Handler Exam Prep is an iOS Education app by tanocee, Inc., released on Oct 23, 2026. The current version, 1.0.2, came out 3 days ago. It has no ratings yet. It is free to download and offers 2 in-app purchases priced from $1.99 to $4.99.

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App info

Developer: tanocee, Inc.
Category: Education
Released: Oct 23, 2026
Version: 1.0.2 (Oct 23, 2026)
Price: Free
Size: 51.3 MB
Requires: iOS 16.0
Age rating: 4+
Languages: Japanese

In-app purchases

乙4 1か月プラン	$1.99
乙4 3か月プラン	$4.99

Current prices, App Store US.

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About Japan Hazmat Handler Exam Prep

An exam-prep app for Japan's Hazardous Materials Handler (危険物取扱者) exam, Class 4 (乙種第4類 / Otsu 4). Otsu 4 is a national license required at gas stations, factories and logistics sites across Japan. Practice with questions written in Japanese, just like the real exam, and deepen your understanding with clear explanations. ■ Questions in Japanese, just like the real exam The official exam is held in Japanese, so all questions in this app are in Japanese too. Get used to the real exam wording as you practice. ■ Explanations and interface in 4 languages Choose from Japanese, English, Vietnamese and Simplified Chinese. Understand each topic in your own language while getting comfortable with Japanese exam questions. ■ Covers all 3 exam subjects ・Laws and regulations on hazardous materials ・Basic physics and basic chemistry ・Properties of hazardous materials, fire prevention and extinguishing…

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