# Denken 3rd Class - PassRun — 522 questions, subject mocks > 522 questions, subject mocks (iPhone/iPad app by hyuncheol seo.) - Source: https://appshunter.io/ios/app/denken-3rd-class-passrun/id6809243739 (this page in markdown: same URL + `.md`) - Developer: [hyuncheol seo](https://appshunter.io/developer/6797554122) - Category: Education, Reference - Price: Free - Age rating: 4+ - Requires: iOS 15.0 · 65 MB - Languages: American English, Japanese - Released: 2026-10-01 - Data updated: 2026-10-01 - User reviews in markdown: https://appshunter.io/ios/app/denken-3rd-class-passrun/id6809243739/reviews.md ## What is Denken 3rd Class? Everything you need for the Japanese Class-3 Chief Electrical Engineer exam (電験三種), in one app. 522 original practice questions written along the official syllabus, every one with an explanation. No sign-up, no internet connection required — start studying the moment you install it. ■ Mock exams in the real format - 76 items across all four subjects (Theory 20, Power 20, Machines 20, Law 16) - Pass/fail judged per subject: 60 out of 100 in each, just like the real exam - Jump to any question from the answer-sheet view, just like the real CBT - Pause and resume where you left off - 5 full rounds with no repeats ■ Per-subject results, the way the exam actually works - Denken 3rd Class is passed subject by subject, and a passed subject is exempt for two years - The result screen shows whether each subject cleared 60 points, so you know what is left - A high total does not hide a subject below 60 — the app says that subject failed ■ A mistake notebook that thins itself out - Wrong answers are collected automatically - Three correct answers in a row graduates a question off the list - Add your own note to any question - Filter by subject, sort by how often you missed it ■ Study by the 4 subjects and 32 sub-topics - Theory (electrostatics, DC circuits, magnetism, AC circuits, transients, electronics, measurement) - Power (hydro, thermal and nuclear generation, renewables, substations, transmission, distribution, materials) - Machines (DC, induction and synchronous machines, transformers, power electronics, drives, lighting, heating, control, information) - Law (Electricity Business Act, technical standards, their interpretation, facility management) - Short, focused sets by sub-topic, with the answer and explanation right after each tap ■ Statistics that show your weak spots - Accuracy per subject, so weak areas surface on their own - Score trend across your mock exams - Last two weeks of study time and your daily streak - "Weak-point drill" that gathers only your lowest-accuracy questions ■ And more - Random mock: choose the range and the number of questions - Bookmarks for the ones you want to come back to - Search across question text, options and explanations - Dark mode and adjustable text size - Shuffle questions and options so you don't memorise positions - Your study records stay on the device and are never sent anywhere. - The questions are original practice questions written along the syllabus, not the actual exam papers. For official information such as schedules and applications, see the exam centre site (shiken.or.jp). - Contact: seohcz1@gmail.com ## Version history (last 1 release) ### 1.0.4 — 2026-10-01 No release notes. ## More apps by hyuncheol seo - [SumTarget - Number Sum Game](https://appshunter.io/ios/app/sumtarget-number-sum-game/id6798102099) - [Electrician Written - PassRun](https://appshunter.io/ios/app/electrician-written-passrun/id6798151876) - [Onedoku Sudoku - Daily Puzzle](https://appshunter.io/ios/app/onedoku-sudoku-daily-puzzle/id6798458790) - [Forklift Exam - PassRun](https://appshunter.io/ios/app/forklift-exam-passrun/id6800240185) - [GeoRun - GPS Workout Map](https://appshunter.io/ios/app/georun-gps-workout-map/id6801569179) - [SuperLotto Plus - SumLotto](https://appshunter.io/ios/app/superlotto-plus-sumlotto/id6801765171) All apps by hyuncheol seo: https://appshunter.io/developer/6797554122 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-01.*