Different apps different results?!

Kerry
Hi everyone, I'm using glow and ovia and they are both telling me different ovulation/fertility times and different AF prediction dates despite being given the same info?! I've started using OPKs to help track ovulation aswell but why would they give different results and which do I go by?!

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.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors