#21 Many fitness and wellness apps
"Mobile apps that are intended for individuals to log, record, track, evaluate, or make decisions or behavioral suggestions related to developing or maintaining general fitness, health or wellness, such as those that..."
Health and fitness apps abound and installs are predicted to grow 60 percent by 2017. MobiHealthNews recently compiled a slideshow of seven fitness apps with at least 16 million downloads, which includes MyFitnessPal, RunKeeper and Azumio. While some of these apps can integrate with devices, they almost all work as standalone apps, too.