I've been using natural cycles since last sept, first to track my cycle after coming off the implant and then to ttc.
I've found it fine, and like some features like how you can see a temp graph over time of all your cycles and how it highlights your peak fertility days very clearly, but I think it could have more functionality to log CM and symptoms.
My subscription is about to end and I don't think it's worth the £40 p/a when there are so many free apps out there, so would like to switch.
Which is your favourite ttc app? And why?