Apps that ask for too much personal information or payment details up front without a good reason should be avoided. Finally, avoid downloading any app that demands a usa visa slotsone-time fee or investment in order to access earning potential. Paying fees or making investments to begin making money is not what legitimate money-making apps should ask of their users. An application is probably a scam and should be avoided if it asks for payment up front or makes earnings guarantees in return for an investment.