This is an interview study that examines how people use online symptom checker platforms or apps (e.g., WebMD, Ada, K health app, Your.MD) to self-diagnose or support the decision of whether and when to do a medical visit. The research procedure involves: 1) a short screening survey which helps us determine who are eligible to participate; 2) an audio‐taped interview with each eligible participant that will last approximately 30‐60 minutes online or offline near Penn State University Park. Each participant will be compensated with a $20 Amazon gift card for completing the interview.