Theres no way this is legal
The few dozen free images are fine and even helpful, as far as they go, but most of the images require a paid upgrade. I didnt contact the app developers, but given the variety of artists represented, and the fact that most of the images were originally produced by the church, I would consider it a good bet that they dont have the copyright to charge for this material. My guess is that this app is simply a compilation of google image search results on a number of gospel terms, thrown into folders with a $3.99 price tag slapped on. And, if thats what you want, you will love this app.
Madmardy about
LDS Art