Which tracking method is most accurate?

The sympto-thermal method, combining BBT with cervical mucus observation, provides the most complete ovulation confirmation. Calendar-only methods are the least reliable for irregular cycles.

Do I need to track every day?

Calendar methods require logging only period start dates. BBT and sympto-thermal methods require daily morning readings. Choose based on what you'll sustain.

questionnaires

Cycle Tracking Method Finder

Match your lifestyle, goals, and tolerance for daily logging to the right cycle tracking method -- from simple calendar counting to full sympto-thermal charting.

There's no single right way to track your cycle. Some people need a daily ritual with thermometers and charting. Others need a button that says "period started." Both are valid. The method should match the person. This assessment finds that match. Question 1: What's Your Tracking Goal? Why are you tracking at all? Option A: Period prediction. You want to know when your period is coming. Calendar methods and app algorithms handle this. Option B: Fertility awareness for conception. You want to identify your fertile window. This requires biomarker tracking beyond calendar dates. Option C: Fertility awareness for birth control. You want to identify and avoid your fertile window. This requires the most accurate method and the most consistent practice. Option D: Health monitoring for a condition. You're tracking patterns for PCOS, endometriosis, PMDD, or another condition. Your doctor's needs should define your method. Option C has the highest accuracy requirements. If you're relying on cycle tracking to prevent pregnancy, the calendar method alone is insufficient. Question 2: What's Your Morning Routine Like? BBT requires measurement at the same time each morning before getting out of b