The Sarahah website describes the app pretty simply: “Sarahah helps you in discovering your strengths and areas for improvement by receiving honest feedback from your employees and your friends in a private manner.”

The app allows users to search for others who they may know and then send them anonymous messages. True to Sarahah’s origins as a tool for honest employee feedback, the app encourages users to craft “a constructive message” after they select a recipient. Users can apply filters exert some control over who sends them messages, and they can “favorite” the messages that they like—but the app does not allow them to respond to messages. Sarahah notes that the app will not disclose users’ identities without consent.