I read some reviews before deciding to post my own. It is true that this app is very sensitive to picking up any noises produced in a human body, how else is it supposed to pick up a fetal heart beat in a sac filled with amniotic fluid and surrounded by muscle? I bought the app before I knew it would pick up a beat, even tried it and failed to hear anything. Waited till almost 25 weeks and was very patient to my moving baby, after a couple minutes and following directions I picked up a strong heart beat and now have it recorded, posted on FB and texted to my partner. I think consumers want instant gratification and have unrealistic expectations which is their own demise, this is a wonderful app and definitely worth the purchase.