Numerous earning apps are on the market, but not all of them are worthwhile investing your time & energy in. Here are a few of the highest-earning applay store gamesps that don't require an initial payment to get you started: 1. Swagbucks: Swagbucks is a well-known earning app that lets users earn points through watching videos, completing surveys, shopping online, and more. Points can be exchanged for gift cards to well-known stores or cash via PayPal. 2. .