This app is a nice change from the standard apps that have been getting released lately. Its still has a nice clean design but it also involves more complicated elements that make for a nice relaxing interface.
I like the fact that the main content on the page never disappears, although the interacting with the side bar is at an all time high. It& a very clean layout with flat ui colors that speaks nicely to the flow of the app.
Inspiration mobile #4 : interfaces et applications