Apps that offer cashback include Dosh, Rakuten, & Ibotta. Also, there are apps that let users get paid for doing things like mystery shopping, website testing, and market research studgame satta kingy participation. Field Agent, UserTesting, and Respondent are a few instances of these task-based applications. Both Offering Services and Selling Goods. Apps like Poshmark, which lets users sell clothes & accessories, & TaskRabbit, which lets users offer a variety of services to local clients, are examples of platforms that let users sell goods or render services.