Gigwalk wants to put your smartphone to work. On Wednesday the startup is launching its platform for on-demand, on-location task completion.

Businesses can use Gigwalk to post simple projects that can be completed by anyone who has a smartphone. A project might, for instance, ask users to take photos of a restaurant’s menu and answer a series of questions (i.e. “Is the establishment wheelchair friendly?”).

Using an iPhone app [iTunes link], Gigwalk members — or “Gigwalkers” — sign up to complete tasks near them in exchange for between $3 and $90 per task.

It’s not exactly a fulltime job, but it is an easy way to score some fast extra cash. The highest paid Gigwalker in the six-month long private beta earned $2,173 for 277 completed “gigs.”