With the help of revenue-generating apps, businesses can reach a wide range of prospective users and are willing to pay for user feedback. You can gain little cash or incentiaviator game apkves by finishing these tasks, & these can add up over time. Marketing Goods and Services. Selling goods or services through money-making apps is another way to make money without having to invest any money. You might use an app, for instance, to market digital goods like e-books and photographs, as well as handcrafted items and vintage apparel.