Featurepoints is a website which offers free Paypal vouchers and paid apps, among other things, for points gained through downloading iOS apps. The apps only need to be used for thirty seconds to get your points, and most apps pay 90+ points, so, at 3000 points per $5, it can be quite easy to get vouchers and apps.
You can get 50 free points by using this link: https://featurepoints.com/r/2BX0H3
You can get 50 free points by using this link: https://featurepoints.com/r/2BX0H3