I recently returned from the 2017 IBMSAM convention and a dealer (I think) showed an app where you wipe an area roughly the size of a silver dollar on the screen and you can see right through the phone to physical objects behind it!
Obviously it utilizes the camera real time to do this but it is a startling effect especially when followed by the silk through phone.
Does anyone know the name of this app and where it can be purchased?
PS: I had posted this request under APPSolutely but got no responses, so maybe posting here may get the attention of an attendee.

Glowball, I haven't seen this effect personally but if no one has any info for you, you might try a google search for "see through phone app" Seems like there's several possibilities that might fit your question.

Was the first thing I did a month ago, but they were all whole screen "invisible phone" type of effects. What I'm looking for is the app that comes up with a "foggy" screen and you wipe an area about an inch or so and you can see right through the phone. When followed up with silk through the phone it looks fantastic. Thanks for responding.

Glowball - the app you are looking for is called "Wipe" or Simon Pierro's Magic Wipe!

Will follow up on this.
Thanks so much Bill!