Hi, I like sharing good deals I find online, so here you go - there is a new TTC website ovufriend.com, which inteprets cycles (fertility, pregnancy signs etc..). It's still in beta phase (stage before you go to the market or something like that) and so it's for free!! I'm writing this because I know that so many of you pay and complain for FF and this one is kind of similar to FF, but in my opinion much better (and for free now)! This is my second cycle there and so far it's good (more cycles intepretations and more accurate than ff- before ovufriend I only used ff, so I'm not sure about other sites).
Hope it helps! Good luck!