This happened to me back in February 2016 at my house.
My bedroom in my house is the main location for things to happen. I was on my phone before I went to bed and came across an app called Ghost Radar. I decided that I would download it just to see what it was all about. As soon as it had finished downloading I decided that I would run it for a few minutes before I went to bed. I waited about ten minutes but nothing really happened so I went to bed.
The next morning I was woken up by someone or something. I looked at the clock and it was half nine and that's when I felt a presence of a man in the room with me. Something in my head told me to run the Ghost Radar app so I decided to try it again just to see. There's one corner in my bedroom in particular that always has an energy or something come from there. And again that's were the presence was in that corner of the room. I finally got the app to run but at first nothing happened. Then a word popped up on screen, it said I then another one a few seconds later SEE and then another one YOU. The app read out "I SEE YOU". It really freaked me out I thought that the app was fake and it was just rubbish really. I couldn't believe it said a full sentence.
Then after it said that sentence you could really feel the energy in the room. I could see a shadow move quickly across the room and then I started to see orbs with my own eyes. It also started to move stuff left on my corner unit and it also moved the curtains. The energy was so strong that it lasted a whole hour before things went back to normal.
After that happened I deleted the app and haven't used it since.