This is an excellent study application for a serious Japanese learner to improve reading/writing/listening skills in Japanese. It can be used for independent study or it can be used as a supplement to whatever class you are already taking to learn Japanese.
All Hiragana/Katakana/Kanji in this application are supported by stroke animation that shows you not only the stroke order but also stroke direction. Also they have format of flashcard for mnemonics, tracing for writing exercises, and quizzes written in normal text with Hiragana and Kanji, which is the best way to master Kanji through vocabulary.

You don't have to carry textbook, dictionary, flashcards, paper and pen. Just carry iPad with this app and practice this workbook whenever you have time in the subway, in the bus, at the coffee shop or anywhere. When you master this application, you will be very comfortable at reading manga, magazine, novel, newspaper, blog, website or whatever in Japanese.

* Hiragana/Katakana On charts with sounds that supports Sei(50) On, Daku On, Yo On.
* Flashcard system, which supports stroke order animation and example words written in Hiragana/Katakana on the front side and English/Romaji on the back side.
* Tracing exercises with stroke order animation with wrist protection feature.
* A lot of great and fun quizzes like crosswords to make sure that you are comfortable with Kana before moving on the Kanji or vocabulary workbooks. All exercises are created by Japanese native speaker.

* The latest, 2010 version, complete Jôyô Kanji (2136 kanji) list. You can use it as reference.
* Customizable flashcard system for all Jôyô Kanji with stroke order animation and example Japanese words.
* Customizable writing exercises for all Jôyô Kanji with stroke order animation and Kanji reference with wrist protection feature.
* Hundreds of quizzes from beginners to advanced level are written in normal text with Hiragana and Kanji, English equivalents and speech audio. It could be an excellent materials in preparation for JLPT (Japanese Language Proficiency Test) level 1-5 or college level Japanese course test. All exercises are created by Japanese native speaker.
* Hundreds of dictation exercises. Learn Japanese from listening!!

* The list of more than 2000 must-know Japanese words for any serious Japanese learner.
* Customizable flashcard system with example sentence.
* Customizable writing exercises for 2000 Japanese words with stroke order animation with wrist protection feature.
* Hundreds of quizzes from basic to advanced level are written in normal text with Hiragana, Kanji, English equivalents and speech audio. It could be an excellent materials in preparation for JLPT (Japanese Language Proficiency Test) level 1-5 or college level Japanese course test. All exercises are created by Japanese native speaker.
* Hundreds of dictation exercises. Learn Japanese from listening!!

Lastly but not least, this application is probably not for the beginners who expect something like introductory 101 Japanese textbook. This application assumes that you already have a grasp of basic components of the Japanese language.