Edmunds.com is one of the most popular resources on the internet for people looking for pricing information on their cars, and the company recently maderesearching on the go a little bit easier. The company updated its smartphone app with the most up-to-date research on new and used cars, including trade-in values and retail prices.

The app is designed specifically for the Android. Although it was popular when it was first launched, Edmunds.com received a significant amount of feedback from users who would like info on used car and trade-ins, and they apparently took the message to heart.

"The initial launch of our Android app for new car research was a major success and the most common feedback we received was a strong desire for used car information," said Jennifer Cleverley, director of mobile technology at Edmunds.com. "We heard that feedback loud and clear, and car buyers now have an even better app to help them negotiate their new or used vehicle purchases with confidence."

In addition to taking advantages of programs like the Edmunds.com app, there are a number of things you can do to ensure that you get the best price possible when trading in your car. According to AutoTrader.com, one of the best things you can do is to put some effort into making your car look nicer.

There are a number of small steps you can take, like washing and waxing the exterior, but turning your attention toward the inside can have big impact as well. A thorough cleaning, including the upholstery, rugs and mats, and adding an air freshener for good measure, will all pay off in the long run.

Of course, you can't just head in to trade-in your car blindly, either. The publication reports that sellers must do their due diligence when it comes to researching how much they can reasonably expect to get for their car.

Finally, it would behoove you to make sure that you have all your records in order before heading off to the dealer. In particular, it is important to have all documentation of maintenance to prove to the dealers that the car was well taken care off, according to the website.