Possible error in Nurture baby info

I am approaching my 20th week of pregnancy and the nurture app says the baby grew from 6" long and 8.5oz to 10" long and 10.5oz between weeks 19 and 20. That big of a jump in length seemed a little unbelievable so I checked a few other sources. The weight seems correct but other sources say the length should be about 6.5" long at 20 weeks gestation. Can this error be updated in the next app update?