I had been using this app for years and it was great! I also had the pro version for a while which I thought at the time to be totally worth it. Life was good... until -plot twist- one day with no reason or explanation at all, this app decided to delete ALL of my 4 years worth of information and there is absolutely no way I can get it back. This also happened to my sister and some friends. So, I would definitely not recommend downloading this app, unless of course you enjoy the feeling of risk that comes with the possibility of having YEARS worth of data and information completely vanish from the face of the earth for no apparent reason :)
10307657899 about Period Diary Ovulation Tracker, v3.1