Blue Letter Bible is an iPhone app that provides a personalized Bible reader and powerful Bible study tools. With over 30 Bible versions available, including English, Spanish, Chinese, Korean, German, Russian, French, Hebrew, and Greek, users can customize their reading experience with rich color themes, fonts, auto-scrolling, and parallel version views.

This app offers advanced word searches, dictionaries, and encyclopedias, allowing users to perform in-depth word studies. The Treasury of Scripture Knowledge and text commentaries are also available for those who want to dig deeper into God's Word. In addition, the app offers audio Bibles and commentaries for those who prefer to listen.

Users can highlight, underline, and take notes, and all of their personalizations are backed up in the Cloud. The app also allows users to share Bible verses through various social media platforms and email.

Blue Letter Bible is a free app, and it has over 1 million app users and 7.5 million annual website users. It is an excellent tool for those who want to study the Bible and personalize their reading experience.