You can study more than 100 questions. Please try to study in your free time.
It is free study app for Android smartphone. Please, download and try it.
It is an application to study chemical formulas with girls. Use the 〇✕ button to learn with a question-and-answer quiz. If the answer is incorrect, the girl will not be well.
Please study together. Also, if you have any additional requests, we would appreciate it if you could contact us.