Welcome!
The purpose of this site is to practice conjugating Japanese adjectives and verbs.
You'll choose which forms and vocabularly lists to practice. The site will then choose a random vocab word and ask you to conjugate it in a random form you have chosen.
The site uses a built in Japanese IME for converting romaji to hiragana. If you are unfamiliar with how to type in Japanese, Tofugu has a great guide (only hiragana is supported on this site).