App on phone

Kristen • Baby #1 due 08/13/19🤰

I have this app on my phone that you can get on the Apple play store called Tiny Beats. You can listen to your little ones heartbeat on your phone using the microphone ... I’m 13 weeks and for the past 3 I haven’t been able to find the baby’s heartbeat and there’s a lot of feedback on the mic... how reliable are these apps? Am I just not looking in the right spot?