俺の電工2種 - 第二種電気工事士の筆記試験アプリ is an iPhone application developed by Keiichi Yamaguchi that provides an easy and convenient way to practice for the past 25 periods of the second-class electrical work exam. The app includes 1500 exam questions (※1) from the 21st year of the Heisei Era to the second half of the 4th year of the Reiwa Era.

The app offers simple true or false quizzes and simple pass/fail judgments by year. It also allows you to practice different categories such as basic theory and wiring diagrams. The app enables you to pause and resume your test, so you can easily challenge yourself during your free time on the train or bus. Each question records the number of answers and correct answers, allowing you to identify your weak spots. The app also supports Game Center (※2), where you can enjoy taking the test and unlocking achievements.