Startup cost: $0 - $100

Quickthoughts is a survey app that typically requires no upfront investment to start. Users can begin earning by simply downloading the app and completing surveys. However, for those who want to optimize their experience, a high-end estimate might include costs for a reliable smartphone ($50-$100) to ensure smooth app performance and a stable internet connection. 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 often describe it as a low-cost side hustle, but the real cost is the time spent completing surveys.