Tsunagu Denko: Electrician JP

Study app for Japan's Second-Class Electrician exam (第二種電気工事士), in Japanese. Written exam: 39 past papers (1,943 questions), each with its source and an explanation of every choice; zoomable wiring drawings; a CBT-style 50-question mock mode that resumes where you left off. Practical exam: a wiring-plan trainer for all 13 candidate problems where you connect the wires yourself and the app checks colours, switching, ring sleeves and connectors. Free: the 5 newest past papers, 3 wiring problems, the symbol table and a short weekly mock. Pro is a one-time purchase: no subscription, no ads. Progress stays on your device and in your own iCloud. This app is independent and not affiliated with the exam body (Electrical Engineers Examination Center). Past questions are used under the body's published terms, with sources shown.