Price-tracking apps are gaining popularity, helping consumers find the best deals on consumer goods, plane tickets and more.

"Simply tap the price-tracking toggle below the search filters, and you’ll get an email if prices go down substantially for any of the hotels listed in the results," Google says in a blog post. "Our ...

WRAL Smart Shopper uses the specifications below to find the cheapest prices on the following staple items. The best way to see this data is in a browser. Tap for the complete tables to see prices ...