Anyone else confused by dates??

J

So I used Femometer to track my periods and it’s been spot on however once I got my positive and it switched to the pregnancy version it’s dates are different to glows 🫣 only by 5 days I think but I’m sooooo confused haha I know the date of the “baby dance” but honestly that doesn’t help when try to date how many week I actually am 🙄 please tell me I’m not the only one confused by these apps?! For you ladies that this happened with which dates did you find you where??