The Bump app..???

Sarah • TTC since April 2016. MMC #1 Sept `16 MMC #2 Jan `17 Ectopic and Tube Removed Nov ‘17
Has anyone got this app? Or ever used it before? 
I've just downloaded it and it's meant to have graphics to show what the baby is as big as for example poppyseed etc etc but mine doesn't show that and I can't figure out how to make it work..does anyone know?!xxx