I'm slightly confused, he made his app free on June 15/16, and two days later he's got a tonne of reviews from users stating this application has helped them lo

I'm slightly confused, he made his app free on June 15/16, and two days later he's got a tonne of reviews from users stating this application has helped them lose weight, and sounds like they've been using it a while. If the surge in downloads happened just two days ago, those reviews all sound very fishy.