Be notified while adopting the test subject party submission position!
Aperture Science comes to Android!

Portal is a visual theme for the popular Floating Notifications app.

(Floating Notifications can be found here: https://play.google.com/store/apps/details?id=robj.floating.notifications)

Note:
I did not create the source images used in this theme - I have only edited them to be compatible as a theme.
All credit and rights go to the respective creator of each image.