1) concept-it provides us money by only reffering this app to others by only reffering thebyhe money of refferal is given to us.only the upper person would get the money of our earning which is too bad.
2) layout and design- layout of the app is beautifully designed and the text are impressive but unhappy with the concept.
3) -usefulness app- the person would get bored from it in just 2 days
Bad app I had ever seen