I read it in one of the comments posted to the video in the OP link. It also said that the people in the video were on the app development team.

I thought it was pretty good/real too, but I will admit that I did think it was strange that he mentioned the "burner" app just out of the blue and said "I couldn't have done all this without it." I actually noticed that while watching it. Once I read that comment, it all made sense.

I also thought the cop was too cooperative, and the girlfriend was too "not-upset." The main guy also seemed a little too "calm" to me. No shaking voice, too confident, etc.

I found an interview with the guy that was just gleaming with praise for the stupid app. He said he was originally going to buy a pre-paid cellphone....and was actually on the way to to the store to buy it when his friend texted him that he could get this great new app for only $1.99!!!!! So if he was going to do this with a prepaid phone, why would he say in the video that he couldn't have done this without burner? Why mention ANY of that in the video?

So I don't have proof or anything, but there are too many red flags for me to just let it go.