In recent years WhatsApp has emerged as one of the world’s fastest growing platforms. Founded in 2009 by two Yahoo former employees, WhatsApp was acquired by Facebook in 2014, and is now the preferred app in more than 100 countries around the world (Sevitt, 2017). Exploration of WhatsApp as an instrumental tool for ordinary citizens, activists, government agencies, businesses, and “bad actors” meets with considerable methodological challenges too. Much current work on WhatsApp employs traditional social science methods to understand its use, for the app cannot be studied using digital methods relying on, for example, the extraction of large-scale data sets via accessing platforms Application Programming Interfaces (APIs). In this workshop we will look at and reflect on new methods to know more about what kind of information circulates on this platform, who is responsible of mobilizing its spread, and user practices on the app.