Abstract: The inventive subject matter provides apparatus, systems and methods for conducting a survey. The method includes the step of providing access to a server that stores information of potential respondents. The information of each potential respondent includes an identifier of a mobile device associated with the potential respondent. The method further includes a step of sending invitations to participate in the survey to a group of target respondents selected from the potential respondents based on retrieved application data from the mobile devices associated with the potential respondents. A system, including data storage and a processor, is also presented. The data storage stores information of potential respondents, including an identifier of a mobile device associated with the potential respondent. The processor retrieves data from the mobile devices and sends invitations to participate in the survey to mobile devices associated with a group of target respondents selected from the potential respondents.