Best app install sites that pays through Paypal Cash?

I know many ways to make money through phone, such as watch and win, play game and win, do survey and win, app install and win. Compared all of them, I prefer to app install and win because it is very easy finish. I have many smartphones and want to use them to make money online. Do you know some best app install sites I can use? I know some apps such as freemyapp , which is so famous for everyone. But I do like real cash instead of all gift cards. It is so better to let me know some best app install sites because I think app install is very easy to complete without any waste. How do you think？

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