As an AI language model, I can provide information about popular apps available on the Google Play Store that have the potential to help you earn money. However, please note that the earning potential and popularity of these apps can change over time, so it's always a good idea to do your own research and read user reviews before downloading and using any app. Here are five apps that have been known for their earning potential: 1. Google Opinion Rewards: Developed by Google itself, this app allows you to earn Google Play credits by completing short surveys. These credits can be used to purchase various apps, games, movies, books, and more on the Google Play Store.