Mixpanel is an business analytics service and company. It tracks user interactions with web and mobile applications and offers tools for targeted communication with them. Its toolset contains in-app A/B tests and user survey forms. Collected data is used to build custom reports and measure user engagement and retention. Mixpanel works with web applications, in particular SaaS, but also supports mobile apps. As of April 2013, Mixpanel claimed to track 12 billion actions per month for its customers. Mixpanel clients include AirBnb, Miniclip, Path, Docusign, Venmo, WordPress, Rosetta Stone, Demand Media, Match.com, Kickstarter, Quora and Jawbone.