inne is a medically certified at-home fertility monitoring system that uses saliva to provide personalized insights into the user's cycle, including fertility tracking and contraception without wearables.

Unlike temperature-based methods, inne directly measures progesterone in saliva with scientific precision to confirm ovulation. It offers dual purpose use as both fertility tracking and hormone-free contraception, is lifestyle independent, and does not require wearing devices overnight.

The system includes the inne Reader and strip subscription, with flexible package options and free delivery. It is designed for women above 18 years with cycles between 22 and 35 days, not pregnant, not breastfeeding, and not on hormonal contraception or treatments affecting their cycle.

inne provides a comprehensive app to track hormones, symptoms, and wellbeing, helping users know fertile days, track cycles, and support getting pregnant. The product has received positive ratings and is praised for convenience, reliability, and scientific accuracy.