TL;DR— So many Biblical resources are freely included which other apps charge hundreds of dollars to unlock!

BIBLES
American Standard Version
Berean Study Bible
Bible in Basic English
Brenton's English Septuagint
Contemporary English Version
Douay-Rheims Bible
Easy-to-Read Version
English Standard Version
Eth Cepher
Good News Bible
International Standard Version
Jewish Publication Society Old Testament
Jubilee Bible
King James Version w/ Strong's Numbers
Lexham English Bible
Literal Standard Version
Modern King James Version
Revised Version
The Passion Translation
The Remedy New Testament
The Scriptures 2009
Tree of Life Version
World English Bible
* Plus, many more Bibles in over 70 languages!

COMMENTARIES
A Popular Commentary on the New Testament
Adam Clarke's Commentary on the Bible
Albert Barnes' Notes on the Bible
Chuck Smith's Through the Bible Commentary
David Guzik's Enduring Word Commentary
Dr. Kretzmann's Popular Commentary
Expositions of Holy Scripture
Expositor's Bible Commentary
Great Texts of the Bible
Haydock's Catholic Bible Commentary
Jamieson, Fausset and Brown Commentary
John Darby's Synopsis of the Bible
John Gill's Exposition of the Entire Bible
John Wesley's Notes on the Bible
Joseph Benson's Commentary on the Old and New Testaments
Keil & Delitzsch Commentary on the Old Testament
Matthew Henry's Commentary on the Whole Bible
Poor Man's Commentary
Scofield Reference Bible Notes
Sermon Bible Commentary
Summarized Bible
The Biblical Illustrator
The Cambridge Bible for Schools and Colleges
The Companion Bible
The People's New Testament
The Preacher's Complete Homiletical Commentary
The Pulpit Commentary
The Treasury of David
Through the Bible Day by Day
Treasury of Scriptural Knowledge
Word Pictures in the New Testament
Word Studies in the New Testament

DAILY DEVOTIONALS
Day-By-Day By Grace
Devotional Sermons
Morning & Evening
Our Daily Walk
Streams in the Desert
The Bent-Knee Time

DICTIONARIES
Cyclopedia of Biblical, Theological and Ecclesiastical Literature
Easton's Bible Dictionary
Fausset's Bible Dictionary
Hastings' Dictionary of the Bible
Hitchcock's Bible Names
International Standard Bible Encyclopedia
Nave's Topical Bible
Poor Man's Concordance
Smith's Bible Dictionary
Torrey's New Topical Textbook
Webster's 1828 Dictionary

LEXICONS
Ancient Hebrew Lexicon of the Bible
Brown-Driver-Briggs' Hebrew Definitions
Mounce Concise Greek-English Dictionary
Strong's Hebrew and Greek Dictionaries
Thayer's Greek Definitions

REFERENCE BOOKS
A Fourfold Salvation (Arthur W. Pink)
Absolute Surrender (Andrew Murray)
Ante-Nicene Fathers
Antiquities of the Jews (Flavius Josephus)
Creeds of Christendom (Philip Schaff)
David - Shepherd, Psalmist, King (F. B. Meyer)
Dispensational Truth (Clarence Larkin)
Foxe's Book of Martyrs (John Foxe)
History of The Christian Church (Philip Schaff)
How to Study the Bible (R. A. Torrey)
In His Steps (Charles M. Sheldon)
Institutes of the Christian Religion (John Calvin)
Jeremiah - Priest and Prophet (F. B. Meyer)
Joseph - Beloved, Hated, Exalted (F. B. Meyer)
Knowledge of the Holy (A. W. Tozer)
Peter - Fisherman, Disciple, Apostle (F. B. Meyer)
Prayer and Praying Men (E. M. Bounds)
Saint Paul the Traveler (William M. Ramsay)
Serious Call to a Devout and Holy Life (William Law)
Sketches of Jewish Social Life (Alfred Edersheim)
The Attributes of God (Arthur W. Pink)
The Deeper Christian Life (Andrew Murray)
The Essentials of Prayer (E. M. Bounds)
The Life and Times of Jesus the Messiah (Alfred Edersheim)
The Necessity of Prayer (E. M. Bounds)
The Overcoming Life (D. L. Moody)
The Possibilities of Prayer (E. M. Bounds)
The Pursuit of God (A. W. Tozer)
The Reality of Prayer (E. M. Bounds)
The Temple: Its Ministry and Service (Alfred Edersheim)
The Training of the Twelve (A. B. Bruce)
The True Vine (Andrew Murray)
The Weapon of Prayer (E. M. Bounds)
Tortured for Christ (Richard Wurmbrand)
Wars of the Jews (Flavius Josephus)
With Christ in the School of Prayer (Andrew Murray)