There’s no shortage of web apps which let you quickly write some code and preview it instantly on the web without having to setup a development environment locally. Snack is provides the same seamless experience for React Native. In this talk we will dive deeper to see how Snack works under the hood, the challenges we faced while building it and what can use you use it for. This talk was presented at React Native EU 2017, September 6-7, Wroclaw, Poland.