There are a few ways to find app developers in San Francisco. The first is to search online directories like Zazz. This website lists developers in the area and allows you to filter your search by location, skill set, and project size.Another way to find app developers in San Francisco is through networking. Attend local meetups or events related to app development and get to know some of the other professionals in the area. You can also connect with developers through online communities like Reddit or Twitter.If you have a specific project in mind, you can also post a job listing on websites like Elance or Upwork. Be sure to include relevant details about your project so that developers can submit proposals that are tailored to your needs.