I've been using it for years just to keep track of my cycles. I just use the free version and it works great.
I pay for it. It wasn't that much and I like the extra features.
I dont really "like" the free version because it doesnt really tell you when you'd be fertile or anything or forcasted Ov days.. but.... I guess its not really rocket science to know when you have CM or +OPK to BD.. haha.. I just like seeing it...
But then I was just gonna pay for it, but then I was like do I really need to spend 45 dollars or whatever it is, for it to tell me to BD when I would already be BD'in?? So Im torn haha
And.. then I was torn if I shld just buy one month, or... a year?? Bcuz you never know how long it'll take!!!