I use this to practice hiragana and decided to share it if someone else would like to use it, first you can choose what letters you want to practice on, and then you can click one of the three buttons at the bottom to choose a mode, draw on the right side of the screen what you think the letter you are given looks like or how you think a letter is pronounced (depending on what mode you chose) and then press the space bar to see if you were correct, then press space again to advance. Do keep in mind that the letters i wrote are extreamly rough since i literally wrote most of them on a laptop trackpad.