Kanji Power Check

To celebrate surpassing 2 million downloads of Kanji Power Check (iOS version), we have added a fill-in-the-blank puzzle game for "four-character idioms."
"Kanji Power Check" is a "kanji writing" application that assesses your kanji skills by having you answer kanji questions in handwriting.
It contains 14,466 questions. A total of 2,411 kanji appear,
including the 1,945 Joyo kanji taught in compulsory education, the 196 kanji added in the revised Joyo kanji list, and some kanji used in personal names.
Six reading/writing question patterns are provided for each kanji, for a total of 14,466 questions.
Between 6 and 20 questions are chosen at random each time, so you can enjoy writing practice without getting bored.
The difficulty of the questions also changes depending on whether you answer correctly, so your kanji skills are assessed accurately.