Gunce...ovulation day??

So glow is telling me that the most important day to have sex is Sunday March 30th (16%) chance of pregnancy.  Whereas Monday March 29th is (13.3%)  & Tuesday March 31st is (10.9). Does that mean that Glow is expecting me to ovulate based on past data on Monday?  My cycles are typically 26-27 days. My Maybe baby app's expected ovulation is Tuesday and I've found it it is usually spot on according to my opk KITS and temping.