Your smartphone certainly costs enough in monthly service plans and data fees, so you can make it earn its keep by using price comparison apps when you’re shopping. Mobile apps help you pit retailers against one another to help you save money on your purchases.

Lifehacker named its top price comparison apps, and here are three that made its list:

* Amazon Price Check — Lets you quickly see if an item you’re about to buy is cheaper on Amazon.

* Google Shopper — Lets you compare online prices with local retailers.

* ShopSavvy — Does much of what Google Shopper does, and adds estimated shipping costs to online item quotes.

Click the source link to check out Lifehacker’s other favorites.

Five Best Mobile Price Comparison Apps [Lifehacker]

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