Check CM during period???
Are you for real? Who wants to stick their finger up there while you have your period? Just think maybe you should fix your logic so that Check CM isn't one of the tips that pops up during your period window.
Also agree with other people that being able to see positive opk and days that you have sex from the calendar view and in the Glow summary PDF would be super useful for anyone who isn't able to get pregnant in the first month.