There is a black bar across the top of my screen in a app. Is there a way to remove it?

[AC Question]

Across the top of a app that was installed from a apk, there is a black bar with the app's name on it. You cant touch anything behind it. It's very annoying and I don't know how to remove it.

 

[B. Diddy]

Welcome to Android Central! Which apk did you install? Is there any reason you couldn't install it from the Play Store?