Anyone any opinions on using baby comp for desired gender?

I splashed out over 600 euro last year on baby comp. It identifies when ovulation is and claims that conceiving on O and the day after results in more girls. The 3 plus days leading up to O result in more boys. In the end I used it to track O but followed the LE diet and sway plan and BD thru O. Am 16 weeks and still don't know the gender. Not sure I am ready to find out yet it might be boy no. 3! Anyway I reckon I will try and sell the thing....feel totally cheated by splashing out that much money on a device....but that was all before I discovered this website!!!

Weird, that's the exact opposite of Shettles!! I hope you can find someone to buy it!