This is my favorite app by far. I use it everyday for personal reading as well as preparing lessons. I love that it has all of the manuals so if you are ever asked to teach a class at the last minute, you have the manual and can prepare the right lesson.
There are a few things that do require Internet to access due to legal rights to content but those are few and most of the time we are all connected one way or another so that doesnt matter to me.
This is the must have app in my opinion.
ASherwood about LDS Scriptures App, v3.17