This simple Mac app scans entered text, and quickly checks if it can be read by children of a given school year. It does this by filtering the chinese characters used in japanese (Kanji), by the school year they are taught, and highlighting them (The official list of which *kanji* are taught in which school year is published by the Ministry of Education of Japan and can be downloaded from: http://www.mext.go.jp/a_menu/shotou/new-cs/youryou/syo/koku/001.htm).