These free tools help you understand your cycle and symptoms and prepare for a conversation with your doctor. They run in your browser, and nothing you enter is saved or sent anywhere.
Perimenopause Test
Answer 6 quick questions to see whether your symptoms point to perimenopause, menopause or something else, such as PCOS. Based on NICE and ACOG guidance, with no email needed.
Perimenopause Symptom Tracker
Rate 12 symptoms each day, mark your period days and print a 30-day summary to bring to your doctor. Everything stays on your device.
Ovulation Calculator
See your likely fertile window for the next 3 cycles, based on NHS guidance. It gives estimates only and is not a method of birth control.
Period Calculator
Predict your next 6 periods from your own cycle length. Predictions are less reliable if your cycles vary.
Cycle Length Calculator
Enter the start dates of your last few periods to see your average cycle length, how much it varies and whether it falls within the 21 to 35 days the NHS treats as regular.
These tools give estimates for general education and are not medical advice or a method of contraception. See our full disclaimer.