Mobile technology is revolutionizing healthcare by putting powerful medical tools into the hands of both medical professionals and consumers. The mobile market is growing rapidly, with more smartphones sold each year than personal computers. This trend is driving innovation in medical apps, with over 7,000 professional medical apps and 18,000 consumer health apps projected by 2013. However, ensuring the quality, privacy, security and effective implementation of these apps remains a major challenge if mobile is to truly reinvent healthcare.