Buy Material Design UI KIT - Walkthroughs by Design_GrapahMA on GraphicRiver. Material Design app For Android. it features 15 unique screens .it well organized and perfectly layered making it eve.
Routes UI Kit - 100 iOS login, how it work screen
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.