I had an app on my phone that served almost the same purpose. It was password protected so that anyone who picks up my phone cannot see my info. I am going to check out the site too though. How have you gotten success with only taking your temperature 5-8 days before suspected ovulation? Don't you have to take it everyday?
I made it! Tailbone length stretched, WL curly

Teri Laflesh's book "Curly Like Me" sits on my desk and everytime I get frustrated and an impulse tells me to shave my head, I look at it in hopes that one day my hair will graze the top of my butt.