Airbnb

Airbnb is a different category entirely because it’s not about doing small jobs or selling old stuff; it’s about using space you already have. That could be a spare room, a guesthouse, or even your place when you’re traveling. 

The iPhone app helps because hosting requires quick communication. Guests ask questions, check in at odd times, and sometimes need help fast. Being able to manage messages, availability, and listing updates on your phone makes the process easier.

Granted, renting your place can require a lot of time and energy beforehand, but once you’re set up, it can be very lucrative.