This app allows users to create their own collection of questions.

There are two types of problems: question descriptions and selection questions. Users can solve the questions in a quiz format.

Users can also add images to the question statements and customize the question options, including generating choices automatically in selection problems.

Additionally, there is a function to convert text files into question collections and vice versa. Users can edit the problems on their PC or share the question collections with friends.

Main purposes for using this app include:
- Memorizing foreign language vocabulary, such as English words
- Memorization of historical facts
- Memorizing official information
- History memorization
- Preparation for periodic tests
- Preparation for junior high school exams
- Preparation for high school exams
- Preparation for center exams
- Memorizing for acquiring qualifications
- Creating personal study guides

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Note: The translation provided here is in British English (en-GB).