There are so many choices out there when it comes to viable and legitimate side hustles that can earn you income, and nowadays, many of these can be accessed through your smartphone. App-based side hustles come in all shapes and sizes, from the tired and tested stalwarts like eBay’s auction services or Uber’s ridesharing program to relatively new kids on the block, such as renting your car with Turo or selling books through BookScouter. There are side hustles for everyone: read on for the best side hustle apps to boost your income!