Description
Review
I have reviewed the Daysy fertility tracker on the blog ‘My Honest Experience Using Daysy as Birth Control’
Accuracy
Daisy claims to be 99.3% accurate with perfect use
Scientific Studies
The algorithm used in daysy is based on that used by the devices from Valley Electronics GmbH, which have been validated by over 28 years of use. The core fertility-tracking algorithm was extensively studied in 1997 in Germany. Over a period of more than 2 years, 686 users in Germany Switzerland, and Mexico were questioned about their experiences with the LadyComp and BabyComp devices. The study measured 10601 months and did register 39 unplanned pregnancies. Of those, 6 occurred during a “green” day leading to a method safety pearl-index of 0.7, and 33 occurred during a “red” or yellow “uncertain” day leading to a usage safety pearl-index of 3.8. For more information, please visit daysy.me/effectiveness
