Field Agent is a free iPhone app that pays its users real cash for completing small jobs, such as giving feedback on products and stores, trying new products, expressing opinions and influencing companies' new services. The app has already paid out over £12 million to its agents in the United Kingdom.

When you join Field Agent, you can browse through the available jobs and choose the one that suits you best. However, keep in mind that jobs go to whoever claims them first. After reserving a job, complete it within the given time frame and follow the instructions carefully. Once you complete the job and your responses comply with all instructions, your money is ready to be deposited into your account.

Please note that jobs generally pay between £3-£10. To qualify for paying jobs, complete "Screener" or "Landscape" surveys, and you will be automatically entered into a prize draw to win £100 cash. Field Agent does not receive payment or use information for submissions it denies.

If you're looking for an easy and fast way to earn some extra cash while you shop, Field Agent is the perfect app for you.