I used it and it was great-till I had to pay for it. Paying for it means they give you an analysis, instead of there's your chart, you analyse it. For example, it will tell you how well you timed intercourse for this cycle, but other than that its not really worth the money. I switched to an app called Ovuview. Its completely free! Yay! Cause I waste enough money on pregnancy tests just to get BFN's... Anyway, it charts all my symptoms the same, has different goals you can adjust it for (set it to ttc, or avoid conception, or whatever, and it gives you advice based on your goal), and gives you hintz about better ways of temping or whatever... I love it! It also gives predictions based on whatever methods apply to your cycles and what your charting, hzs either calendar or chart view, and is completely customisable. There are a few paid features, but they dont give you bare basics and make you pay for good points of the app. It is a wonderful app without paying, where as when FF took away their free trial period, I was left struggling to read all my info and was really PO'd at having to load two cycles of info again...also, you change the goal once you get a BFP, and it charts your pregnancy. Dont know too much about those details yet cause I have yet to conceive, but I'm looking forward to that time when it comes!
I love the paid version x
