What pregnancy app is more accurate

I use different type of pregnancy apps

I just found out I’m pregnant but I’m not going to call my obgyn until about 7 weeks since the Kaiser I go to doesn’t like to see patients until 7-12 weeks anyways ..

Pre mom app shows

I’m 5 weeks tomorrow & then another shows I’m barely 4 weeks and then another shows different so I’m just confused ..

My last period was June 15 & Ik I’m very early but just confused with all these apps showing me otherwise