The Sensor is for your personal use. The OvuSense product is a class II regulated medical device, and as a user of the device you are therefore strictly forbidden by law from selling, reselling, or sharing your OvuCore or OvuFirst sensor with another party, whether the Starter Pack is opened or not.

Each Sensor is uniquely registered to an App account, so your friend will need to set up her own account and purchase her own Sensor.