How to close tutorial

I just downloaded this app, with some apprehension because of the reviews about not being able to close the tutorial overlay when running the app on iPad. Sure enough, when the app opened, a gray film was over the entire page. I tried poking the button up on the upper left, I believe an option to filter article type. The overlay went away , and I was looking at the menu of article thumbnails. I closed the app, reopened it, and no tutorial overlay appeared. Its working just fine on my iPad now. Maybe choosing any button closes the tutorial, while just scrolling or closing and reopening the app doesnt get rid of it. I am running iOS 7, but I think it would be the same in iOS8.

pixelannie about Science Today