Ghost face detector is an app for Android devices that uses artificial intelligence (AI) to detect the presence of a ghost in a photo or video frame. It is useful for entertainment purposes, but it can also be used for scientific purposes, such as to study the effects of ghosts on humans.

If a ghost is detected, it will show an outline of its face. You can take videos or images either with or without outlines. You can also use the app to check videos and photos sent to you by your friends. 

This app has a pro version wherein you can select from different detector types.