Size references on the app

As a husband, I am excitedly following the development of our little girl growing inside of my lovely wife. As a guy that doesn’t concern himself with fruits and vegetables I am often mystified by the size references made of our baby to things I have never seen. I’m probably going to get a lot of hate for this but, a helpful guide for others like me could be something like: golf ball, ping pong, racquet ball, billiards ball, baseball, softball etc. I don’t know what a pomegranate is, but I can definitely wrap my mind around how big a softball is. Lol. $0.02