Oboeru is an educational application designed for iPhone users, focusing on the effective learning and memorization of over 2000 Japanese kanji characters. Utilizing a spaced repetition system, it tracks user progress, ensuring a structured approach to mastering kanji. This method enhances retention and makes daily study sessions more productive.

In addition to traditional learning methods, Oboeru offers a unique drawing test mode that allows users to practice kanji strokes. Users can choose from pre-compiled kanji lists or create their own custom lists, tailoring their study experience to specific needs. This flexibility, combined with daily practice opportunities, makes Oboeru a comprehensive tool for anyone looking to enhance their Japanese language skills.