The 100 Best iPhone Apps of 2015

LevelUp is an iPhone (and Android) app that lets you make purchases using your credit card via QR codes that the app displays. Participating merchants simply scan the QR code on your screen using his or her own smartphone, which initiates a credit card transaction, and you're on your way. The fact that LevelUp doesn't require any special hardware, other than an iPhone (or Android phone), gives it a huge advantage over the other strong player in the mobile payment space, Google Wallet , which uses a near-field communication (NFC) chip to communicate with PayPass readers, installed on some credit card swipe machines at checkouts. And bonus: A lot of LevelUp merchants give you a discount if you use the app to pay.
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