These apps allow users to get rewards for shopping at particular stores or earn cash back on their purchases. There are also apps like Gigwalk and TaskRabbit that link users to local freelanteen patti gold onlinece jobs like odd jobs, errand running, and service provision. With the help of these apps, users can make money without having to pay anything up front. Passive income applications, such as Nielsen Mobile Panel and SavvyConnect, which pay users to simply let the app track their internet usage and behavior, are another category of high-earning apps that don't require investment.