Yes; in the recent v4.1.4 update we now include a fullscreen ad. It is very easy to disable – make any IAP purchase and it’s gone (including, of course, Disable Ad’s IAP).
I was hoping that I would had posted the “money summary” since it was tabbulated back in July 2013 (hopefully detail in a later post). Suffice to say we have not made a profit from WARP gce. <- Thus the reason for adding in the fullscreen ad – sorry… 🙁
 Ad shows when you switch back to the app or switch back to the “Main Control Menu”
 Actually I just located my draft summary, expect to see it very soon.