I have been using this for just over a month to track my bbt. I like the design of this one the best for data entry and usability. Im a little worried about the limited information backtracking on the lite version and may look into the regular one. The only thing I wish is that the chart was fit to the screen and would flip with the tilt function. Colours would be nice too. In total, I like it better than MeFertil - BEST ONE FOR THE PRICE!
Kaity13 about FemCal Lite