※ This demo version operates the same as the full version except for the TTS sound part, but the amount of data is smaller.

1. App introduction
- Includes explanation/selection questions that require memorization among the questions from the electrician practical exam
- Calculation/construction problems are excluded as they are not appropriate for learning with a mobile phone app.
- Includes the first episode from 2003 to 2023 (the official version includes the most recent episode)
- Suitable for learning while on the move or during downtime
- Lightweight app, no internet usage, no ads, no in-app purchases
- Continuous updates of the latest episodes with a one-time purchase

2. Features
- Learn by arranging problems by topic or year of exam
- Provides various learning methods such as inserting keyword parentheses, learning acronyms, learning to view each paragraph, etc.
- Use the wish function to focus on learning problems that users have wished for
- Learn to listen repeatedly until you get used to it with the TTS function
- Easy and quick memorization by using various functions in combination
- New exam questions will be continuously updated
- Click and hold the question mark button for 2-3 seconds to see how to use it.
- Visit http://www.usefulpen.com to learn more.