TestMaker is an iPhone app that allows users to create their own collection of questions. With two types of questions - short questions and selection questions - users can experience the thrill of solving quizzes. The app offers various customization options, including the ability to add images to question statements and automatically generate choices for selection questions.

One unique feature of TestMaker is its text file-test conversion function, which enables users to edit questions on their PC or send tests to friends. Additionally, the app offers a removeAd function that can be purchased.

TestMaker is ideal for a variety of purposes, including memorizing foreign languages such as English words, historical facts, official exams, and test preparation for junior high school, high school, and center exams. It can also be used to create personalized memorization books.