A lineup of "high school English word", "high school English idiom", "high school chemistry foundation", "high school world history" as the original collection of problems, In the chat questions as well as questions about the original collection of problems, you can also hear that you did not know a commercially-available collection of problems. (English composition, Japanese translation, correction of such discussion is not supported)
Of course, high school students as well as those of teachers and working people, or even those of junior high school students will be able to study using this app.
If well utilized, completely challenge university pass for free is no dream! !