Startup cost: $0 - $50

Zap Surveys is a survey app that typically requires no upfront investment to start. On the low end, you can begin using just your smartphone and internet connection, which you likely already have. On the high end, you might spend up to $50 on a few optional tools or services to enhance your experience, such as a premium survey aggregator app or a small budget for mobile data if your internet is limited. There are no hidden fees, but earnings can be slow, and some users report that the time investment may not justify the returns. Online communities generally agree that this is a low-cost side hustle, but the income potential is limited.