Best Bible app for research, serious study or just reading

I use Olive Tree on my iPad for daily reading and taking notes during Bible study and church. It flawlessly and instantly connects to all my commentaries and resource material. The daily reading plans are also very useful. I sync my notes, highlights, etc., to my iPhone for use when I dont have my iPad with me so my Bible goes with me everywhere. It has replaced my paper Bible because the ability to record notes and thoughts is so much more than what can be done in the margin of a paper Bible. Its technology for all ages; Im 67 and have easily embraced the simple navigation Just as I have my grandmothers paper Bible, I plan to give my login information to my kids so they can know my thoughts.

RobertJR1949 about Bible Maps by Olive Tree, v6.0.5