Home / Community / TTC in your 20s

Glow VS Ovia

Tina • Sun, May 22

My FW is the same in both apps but Glow says my AF is supposed to start June 2nd-6th and Ovia says it's supposed to start on the 6th-11th. Why would they be off a week if I've logged everything the same?

Comment

You

Add Comment

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

See Our Editorial Standards

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors

Glow VS Ovia

Let’s Glow

Glow is here for you on your path to pregnancy

25+ million

4.8 stars

20+

Getting Pregnant

Pregnancy

1st Year (Baby & You)

Baby Products