Tempdrop

Tempdrop brings the full fertility tracking solution to your smartphone. Whether you are looking to increase your chances of conceiving, or are practicing fertility awareness methods, Tempdrop is tailored to you. Tempdrop’s wearable sensor and accompanying charting app brings the full fertility charting solution to your smartphone. Using the latest scientific knowledge to bring you an accurate method of cycle tracking and identification of your fertile window. Tempdrop’s smart algorithm learns your unique nightly and monthly temperature patterns, filtering out disturbances for accurate results. Simply wear the sensor on your upper arm when you sleep and sync it to the app whenever it's convenient.
Tempdrop provides continuous monitoring and filters out waking times to give you the true nightly sleeping temperature.

Tempdrop offers a free basic app version with the possibility of upgrading to premium in order to benefit from advanced features including fertility insights, sleep quality data, a calendar view and more.