The word app is the app quiz type form a collection of words of junior high school one to three years level. Grade you want to word check at the start screen, please try to challenge to choose the part of speech. Narrow down mode is a mode to study to focus only the word that I wrong. Let's reset the number of mistake of the word and put a check in the check box If you think that it is not a mistake anymore. You can only proficiency test once a day. Please to test your skills! !