Glows "ovulation dates"

Anyone go by glows ovulation dates and got pregnant? I have no more ovulation tests and with working a lot this week, I have not been able to buy any yet?? hopefully I can get a chance soon to get some BUT in the meantime, I am on my first "green dot" day and Sunday is showing the highest fertility date. Just trying to see if anyone has followed the ovulation days without ovulation testing and had a success?! Thanks ladies!!