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 really care who knows what groceries you’re buying that week then this is seriously the easiest way to make upwards of $300+/year while doing absolutely nothing.
Smart Panel – Some survey sites pay you $5 just for signing up. Smart Panel pays you $15 just for installing their app and keeping it 2 months. Better yet, you get an additional $5 every single month you keep it installed + a loyalty bonus every 3 months. It’s hard to turn down free money and merely installing an app is about as easy as it gets.
Media Insider Panel – Like Smart Panel, Media Insiders works in almost exactly the same fashion except they support even more platforms. You can earn $15/month by installing it on up to 3 devices. Jason @ Frugal For Less has an excellent tutorial on how to get setup.
Nielson Mobile for iPhone – Got an iPhone? Want to make over $50/year for free? Install an app, leave it on, get money.