McDonald's is trying to compete with Starbucks' biggest advantage -- here's who comes out on top (MCD, SBUX)

Hollis Johnson/Business Insider McDonald's and Starbucks are making major investments in mobile ordering apps. As foot traffic falls, chains are growing sales by convincing customers to order on their smartphones. We tried both McDonald's and Starbucks' mobile apps — and discovered McDonald's is catching up to Starbucks' digital domination. As foot traffic falls flat, chains are turning to mobile ordering in an attempt to boost sales. The number of orders being placed via mobile apps skyrocket...