Japanese LDS Quad is the simple LDS Standard Works app for Japanese-speaking people, including the Holy Bible, the Book of Mormon, Doctrine and Covenants, and Pearl of Great Price.

This app contains the following books:

The Japan Bible Society. "Bible, Japanese Colloquial, 1954"
"The Holy Bible, King James Version"
"The Book of Mormon" (Japanese and English)
"The Doctrine and Covenants" (Japanese and English)
"The Pearl of Great Price" (Japanese and English)
"Study Helps" (Japanese only)
"Hymns" (Japanese and English)

English text can be turned on and off by toggling the switch at the upper right corner of screen.

This is not an official app of The Church of Jesus Christ of Latter-day Saints.