危険物乙4 問題集｜危険物取扱者乙種4類解説

Name: 危険物乙4 問題集｜危険物取扱者 乙種4類 解説
Author: StackWorks LLC

StackWorks LLC

⬇ 10+ downloads

Est. actual: 34

Free

No in-app purchases

No ads

Signals

3 this week · 3 positive All of this week's signals →

📈Last 7 days +34 installs · 2/day since Oct 23
🏆Among Education apps top 15% by installs gained this week (1503 peers growing)
🛠Updates actively updated · updated 8 days ago

Installs since launch

+34 installs since Oct 23

Update history

1.0.1 Nov 2, 2026 · seen Nov 9, 2026

アプリのアイコンを新しくしました。

Only the current version so far — new entries appear as the app ships updates.

危険物乙4 問題集｜危険物取扱者乙種4類解説 is an education app by StackWorks LLC with 10+ downloads (about 34 estimated). +34 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.

From the store listing: “287 questions from the Fire Service Examination Research Center's published exams and practice questions. Includes explanations for all questions covering laws, physics, chemistry, and properties of extinguishing equipment.”

危険物乙4 問題集｜危険物取扱者 乙種4類 解説

Signals

危険物乙4 問題集｜危険物取扱者乙種4類解説