good cycle tracker/calendar?

[Carycy]

Just stopped taking the pill after ten years with no gap. I have know idea what my cycle is going to be like after all this time. Can anyone reccomend the best calender/ tracker that is free to use. preferably with an I phone app.
There seems to be a lot of rubbish on the net that makes you pay for stuff after a month.

I use period tracker on my iPod Touch, the free version, no need to upgrade or pay a penny and it holds all the info I need, I've used it for a year and a half and it's been bloody useful now we're going through referrals etc

I use Fertility Friend. That is a link to my chart so you can see how it works.
I have the VIP package which does cost money because I've been TTCing for a year and don't mind paying. What you get for free is plenty to track periods though.
The iPhone app is great and it all links up.
I used it to track my periods before I was TTCing.

thanks. trying out period track. seems good. by the way alteredmy nick name. I am carycy. x