Good-Person
Captain Junkie
Some apps that pay to upload includes giftbay, iRazoo,AppNana, cash out, gift panda, and Appredeem. AppNana pays it users to try apps and it is available on iOS and Android. You can add yours.
I don't think that paying to upload websites are a waste of time because what ever you upload wether it is a spreadsheet, presentation, PDF ebooks might help someone someday.
Well, I have never heard of Apps that pay to upload! Could you please tell how these apps work? Do we need to upload files through apps? What kind of files do they support on their platform?