9 free shopping apps for iOS, Android, and more

The holiday shopping season is stressful enough as it is. Why not make things a little easier (and cheaper) with some free comparison shopping apps for your smartphone?

Whether you relish in the holiday shopping season or dread it, your smartphone can be an instrumental tool for finding and purchasing gifts for your loved ones. A useful app (or two) can go a long way toward saving you time and money. Many of them even integrate bar code scanners these days, so all you need to do to comparison shop is take a quick pic of a product's packaging.

In the gallery below, you'll find a selection of apps for devices running iOS, Android, and BlackBerry--all free, of course. Sadly, though Windows Phone 7 does have some cool-looking apps in the works, we could find none available at press time.