Glow says I'm 6wks 1 day, but other apps say otherwise

Kristina

How and where do I go to figure out how it's calculating this info??

Glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">Pregnancy app</a> says 6wks 1 day, but the regular <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> says 5 wks 5 days and so do others online.

Not sure where it's getting this info..?

Last period was June 4th and I ovulated the 22nd I believe.