Does the natural Cycles App cause tender breasts?

I switched from the contraceptive pill to natural cycles 6 months ago (I track my temperature with an Oura ring that connects to my natural cycles app). From month two it had detected my fertile window and indicated reds days with accuracy. It tells me when to take an LH test and I have ovulated this past moth for the first time since coming off the pill which has narrowed down my red days massively and love that I can be armed with the knowledge of where I am in my cycle and whether or not I’m in a fertile window for my contraceptive choices, no messing with my hormones or remembering to take a pill. I highly recommend if you are wanting to let your body do its think without interfering.

You have to take your temperature and do a ovulation test ( wee sample ) both in the morning then you add all in the app and it tells you if is a red day ( which you have to use another contraceptive method ) o green then you can have sex without contraception because when you have a green day you are not meant to get pregnant . I think if you want to get pregnant go for this app ! but as contraception is not very good as you hardly ever get green days and when you get them ( very rare ) you feel you can still getting pregnant also boyfriends / partners find so difficult to trust the app which it makes it even more difficult for the woman . As an app works very well and is interesting to know when do you ovulate or if you don't ovulate or if you ovulate twice but as contraception needs improvement

It was the best decision I made. I feel so much better changing to this method