Mira's algorithmUpdated 6 months ago

During your first cycle of testing with Mira, the algorithm sets up a baseline LH level of 16 as the average ovulating level. Once the LH level reaches 16, that day will become the ovulation day. But everyone's hormone level is different. You may not need to reach 16 to ovulate.

Meanwhile, in your first cycle with Mira, Mira will automatically predict your upcoming period and fertile window based on the cycle length and period length you had set up in the beginning.

The predicted period and fertile window cannot be removed. Because it is predicted and not actual information, it will be not considered by the algorithm and won't affect the accuracy of the prediction. It is more like a reference for your information. The predicted fertile window will change according to your LH and E3G levels. When your actual ovulation day comes, the prediction will be updated. Mira will learn your cycle and become more personalized over time.

After your first cycle with Mira, the app will set up the baseline with your actual LH level. Once the LH level reaches the baseline, that day will be marked as an ovulation day temporarily. If you get a higher reading the next day, then the day with the higher reading will be marked as the ovulation day. Generally, the day you get the peak of the cycle will be marked as an ovulation day.

The sperm can live from 24 to 72 hours in a vagina. Hence, women’s fertile window is between 4 days before ovulation and 1 day after ovulation. Once you see the surge, you are ovulating in 12-48 hours. It is hard to say if you ovulate exactly one day after or on the same day of the LH surge. However, science has approved that the 24 hours after your LH surge are the most fertile time during a cycle.