How accurate is this app?

so my period is two days late and it's usually never late. this app predicts it to date 75% of the time. but now its more off than usual. should i be worried?

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