We are told to hide God's Word in our hearts, so that we will not sin against Him. Studying and memorizing the Bible is one of the best ways to do that.
'Memorize Scripture' has thematic plans already made with the ability to check off what verses you have memorized.
'Bible Head' makes you create your own set of verses to memorize but it has a great tool to systematically learn the verses that you are committing to memory.
'Bible Hub' is an app that takes you to a website that have many tools for studying the Bible, doing word studies, reading from different translations, reading commentaries and so much more.
'Got Questions' is an app that has biblically based answers to questions about the gospel, God and the Bible.
'Prayer Mate' is a great app that allows you to setup daily devotions, prayer lists for your family, church and those who need the gospel. Each contact can be manually typed in or imported from your contact list. Each prayer can be individualized for each individual.