Wish there was a return policy system for apps like in the Play Store...
There is.
Log into your account in iTunes. go into account / purchase history. Find the app and click "report a problem" and fill in why you want to return the application.
It will be vetted and assuming your complaint/request is legit they will refund you.
You can also do it from a link in your e-receipt/invoice (click report a problem)
It works for all store purchases (movies/music/books/apps).
i've returned a number of items in the past and never had any trouble getting a refund.
And unlike google play - you can do it after 15 minutes timeframe that Google Play gives you up to.