Company hk2006 created these great apps:
Japanese-katakana, ALPHABET_ABC, Japanese-hiragana, Japanese-kanji, Japanese-kanji(18-kanjis), Japanese-kanji2, Japanese-kanji2(22-kanjis), alphabet-abc, hiragana_tango, hiragana-tango2, hiragana-tango2(23words), simple game (travel Japan), tashizan, Japanese-kanji3, and others..
