Yes, companies will pay you to install apps (or place ads) on your cell phone and leave them there. These apps often run in the background and track your spending/purchasing habits. If you’re not one to care who knows what groceries you’re buying that week, then this is an easy way to a few extra dollars each year, for free. Here are some of the best money making apps that we have found:
However, with online employment comes fraudulent companies who scam job seekers into signing illegitimate offers. "There is currently a 61-to-1 scam ratio among work-at-home job leads on the internet — that is, for every legitimate job, there are 61 scams," says Christine Durst, cofounder of RatRaceRebellion.com and consultant to the FBI on internet scam.
Mechanical Turk is Amazon's take on micro-jobs. These are small miniscule-jobs that you can do for other people, which they call HITs, or Human Intelligence Tasks. These are super simple tasks that anyone can do. Some examples are listing off some URLs with certain kinds of images for one cent, or recording a few phrases with a microphone for 6 cents.
However, like anything else truly worthwhile, apps require a significant investment of your time or money upfront. If you don't have the skills, then you have to hire someone who can assist you in creating a great app. But first you need to come up with an idea that will sell. Do the proper market research and analytics to come up with the right app.