I think this varies based on the app you use. Some of them will only use data when you download it the first time, but some might delete the episode after you listen to it or after some period of time (a week? a month?). Any that keep it downloaded should not use additional data for future listens.Another dumb question. I finally figured out how to download it, but if a person does not have wifi does it use data to replay the podcast or just to download it? I used podcast addict and have it on my phone, just not sure if I can listen to it and not use up my data plan. Thanks for the help for us more challenged people!