I am about to start going through the Multiply material again this year (well at least Part 4 on the Old Testament). When I opened up the app I thought it was getting a bit long in the tooth. Ideally I will update it to fit with the material design, but until I find the time to do that, I have pushed out a minor update.
The most noticeable is the show/hide toggle for the resources and Bible readings. Having the box on the left on narrow screens was a big ugly, and I am not sure how much the resources are really used, as it is the same as what is in the app the user is looking at. This way the resources are hidden away, giving more screen real estate for the text.
I have also removed the zoom toggles, which I found annoying. You can still pinch to zoom, although the text does not re-flow, which again I find annoying. There was a space at the top of all the pages which have been removed and overall the font has been increased slightly.