Fertile days are the period when conception is most likely. The app uses your cycle data to help pinpoint when your fertile days occur. Typically, this period includes 5-6 days before ovulation and 1-2 days after.

To accurately track your fertile days, it’s essential to update your cycle data regularly. The app will notify you when your fertile window begins, which is particularly useful for those planning pregnancy.

However, since each cycle can vary, for added accuracy, you may also track signs like changes in basal body temperature or use ovulation tests. These additional data points can help both you and the app better predict your fertile days.