We came across a great FREE resource that I thought you might enjoy. You know how much I love a good deal. Crossway is giving away the online version of the ESV Study Bible, and it is available during the month of November for free HERE. The retail value is $29.99.
The ESV Study Bible is one of my favorite Study Bibles – especially for handling difficult passages. I recommend you get the free online version.
By the way – it isn't a free app; it is a free onilne version. You would need to have online access to use this online version. But I encourage you to download it.