Mindlinker

This is a truly amazing mind-reading app. It's the closest thing you can get to real mentalism. 

Throughout most of the routine, the phone is not even used. It's only used at the end to display the image of what they thought of - on Google.

Ask a spectator to think of any item/word within a specific category. You can name one of the categories listed on your app.

Once they have thought of a word, go through the performance - which is to simply talk to the spectator and make him point to things in the air.

Within a minute, you will be able to pull out your phone and show him what he had thought of, right on Google's own search engine.

This mentalism trick is a watered-down version of Enigma by Christian Grace. If you want the bells and whistles, you should buy Enigma. All credit for the idea of this app goes to him.
If you are happy with the main effect only, then you can use this app instead.

The performance and reveal are the same as Enigma, but the app works in a different way.

You can see how Christian performs this effect from his YouTube performance at:
https://www.youtube.com/watch?v=y1-ImAan4kA

The idea of this app was taken from Christian's Enigma app, but developed in a different way so as not to infringe upon his creation.