How to Choose the Ovulation Calculator — PdG
How to Choose the Right Ovulation Calculator Method for You
Each of these tools – ovulation strip kits, BBT charts, and progesterone (PdG) tests – has their own strength, but each also has its limitations. Below are the strengths and limitations of each ovulation calculator. You can even use two or three of them together to get even more accurate results. Updated May 1, 2019