The Scripture Citation Index, developed by Steve Liddle, is a free mobile app available for iPhone users. It is an education and reference tool that allows users to easily navigate between the standard works of The Church of Jesus Christ of Latter-day Saints (The Holy Bible, The Book of Mormon, etc.) and General Conference talks and other writings that cite those scriptures.

With this app, users can find out who has cited a particular scripture, such as 1 Timothy 4:12 or Daniel 2:44, in General Conferencepresent), the Journal of Discourses, or Teachings of the Prophet Joseph Smith. Users report that this app is helpful for scripture study and lesson/talk preparation. The app is easy to use and provides a convenient way to access and study the scriptures.