mon.thly.info
I found it in Bust Magazine this summer and I am a member. It is free to join and it keeps track of your period in the old school method of calendar marking... but throw away the red pen that you'd draw the little dot or flower with... just fill in the info.
The site sends you reminders on various days and after several months starts to tell you where you are in your cycle, what things mean, when your next is and how long they typically last.
Hope this helps some sisters out! :)
