ThinkApps is an on-demand service for designing and building stunning apps for web, mobile, and wearable devices. Based in San Francisco, CA, ThinkApps powers top Silicon Valley startups and enterprise companies exploring the cutting edge. ThinkApps is the author of "How to Start a Startup: The Silicon Valley Playbook for Entrepreneurs," which is based on the Stanford University course taught by Y Combinator. Learn more: http://thinkapps.com/books/how-to-start-a-startup/.