Just wanted to leave a quick comment about Logos for iOS and provide some (hopefully) useful feedback for future iterations.
I've switched to Logos as my bible reading and study app on my tablet and phone, and in general I'm quite pleased with it. It's got a lot commendable about it, and in particular I'm glad that it has made efforts to stay up-to-date with the new iOS look.
That being said, I have a major issue with it that make it fall a bit short of being delightful to use, and it's a really simple point: page turns. The page turns are artificial and mechanical, nothing like the fluid, natural swipes that iOS users are accustomed to, anywhere else throughout the system. For comparison try swiping through the pages of a PDF in iBooks, or flicking through photos in the Photos app. There is a world of difference, and it really does affect my experience of the software. As far as I'm aware, it isn't difficult at all to use Apple's native animations on your own app, and I'm curious and a little disappointed that they haven't been used.
On the whole, though, this is a really good app. I use it everyday, and there is great value in it. But the one thing wrong with Logos is a thing so central to the experience that it does diminish the satisfaction of interacting with it. I would be thrilled if the page turning issue was addressed!