We recommend that you wear Ava every night during your whole cycle for both follicular and luteal phases, as the physiological changes that occur during your entire cycle are important to improving the accuracy for your fertile window and ovulation predictions.

Of course it can happen where you might have forgotten to wear the Ava - if this happens, please remember to either leave the Ava charging during the day or charge it for at least 3 hours before going to sleep to ensure the battery is fully charged before you wear it at night.

Missing several nights can impact the quality of Ava's predictions which is why we do recommend that the Ava be worn every night.