Retail apps don't historically do well on the rankings. In the top 40 there is only Amazon at #12, Starbucks at #30, and Target at #31. However, it is extremely important in today's world for retailers to have quality apps. "Mobile should be a huge part of every retail brand’s strategy. This past Cyber Monday was the first $2 billion mobile shopping day in U.S. history. Similarly, mobile devices accounted for 90% of sales during Alibaba’s record-breaking Singles Day in November. L2 also found that mobile has double the influence of desktop; phones influenced 80% of consumer purchases last year." The key is being user-friendly and having personalized features.