eBay (Android & iOS)

Of course, some of the best deals to be had are on eBay, and if your loved ones appreciate vintage and one-of-a-kind items, it's a good place to start. The auction giant provides apps for both iOS and Android, though the former was updated recently to offer the added bonus of an integrated bar code scanner for comparison shopping.

For buyers, the apps also offer a way to access saved searches as well as reminders and push alerts to keep you on top of any auctions.