Even if you don’t feel like downloading a bunch of apps, your phone’s browser can be a handy shopping tool, says Bruce Clark, associate professor of marketing and Frank Murphy Family Fellow at Northeastern University in Boston.

“Found some good research sites? Leave those tabs open on your browser so that you can easily access them once you’re in the store,” says Clark.

But apps may be the best tool for price comparison that smartphones have to offer.

“One of the easiest ways to score the best price is to use a bar code scanning app,” says Andrea Woroch, a consumer savings expert.

For example, Amazon Mobile scans the bar code of an item and searches for prices on Amazon.com.