Kougo-KJV app for iPhone and iPad
An offline Japanese-English Bible with furigana/ruby at the top of each kanji, so you might read the Japanese bible with more ease.
Main Feature:
-Built-in Dual bible (Kougo-KJV)
-Furigana/Ruby at each Kanji
-Search & Bookmark
-Multiple Fontsize and Background Color
-Verse Board, double tap to a verse to paste it there. From Verse Board you can perform selection to copy the words to other application, or see the definition if available(iOS 5 an onward).