Hey y'all! I have a question, would love to get some feedback. I use the apps: ruby, glow, and Ovia. Ruby and glow have the same fertility window, but Ovia does not. I had my period from September 22-26 and according to Ovia I had an ovulation window starting on September 27th-October 2nd. It also had another fertility window from earlier that month that started from the 15th-20th.