I had take some time and write new revmob extension for android.
-i had used latest revmob sdk (9.0.4)
-tested on tablet Tesla H7 (os: android 4.2.2)
-tested on stencyl build 8670 (mac mini - yosemite 10.10.14)
Blocks:
-Init SDK with key (android app id)
-Load Full Screen Ad (load interstitial)
-Show Full Screen Ad (show interstitial)
-Load Video Ad (load video ad)
-Show Video Ad (show video ad)
-Is Full Screen Ad Loaded (check if interstitial is loaded)
-Is Video Ad Loaded (check if video is loaded)
-show banner top (to lazy to make 1 blocks for chosing position of banner

)
-show banner bottom
-hide banner
Important!You need to load ad every time before showing.
Banner have some issues (need to call show banner function few times...
To install extension just copy file to stencyl folder 'stencylworks/engine-extensions/' and unzip it.