Trying to learn when you’re fertile or not? The Daysy Fertility Tracking Device can help. Just use this fertility tracker to measure your basal temperature each morning, and enter in your menstrual information as well. Daysy will display a red light if you’re fertile and a green light if you’re not to make your baby planning simple. With sophisticated technology and an intelligent algorithm, Daysy guarantees quality and reliability. Transfer your daily information via Bluetooth to the Daysy companion app, and..