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Tempdrop, the first wearable BBT sensor, was founded in 2013 to address a growing problem in women's health. As technology has expanded options around fertility, women have been looking for alternatives to expensive fertility treatments and hormonal birth control to track their cycle. Natural fertility planning (NFP) is entering the mainstream and countless apps have entered the field with the promise of making NFP accessible to every woman.

This is the backdrop for founder Michael Vardi’s own story. A biomedical engineer by training, Michael came up with the idea for Tempdrop as a way to bridge the gap between fertility apps and hassle-free tracking. After developing a prototype for Tempdrop, Michael launched a crowdfunding campaign in early 2014. While the campaign itself did not reach its funding goals, the funds that were raised and the outpouring of support from women everywhere helped Michael recruit a team and solidified his resolve to build Tempdrop.

Meanwhile, the emergence of the “quantified self” and the idea that our smartphones can be powerful tools for personal health awareness propelled Tempdrop forward. Launched in early 2017, Tempdrop continues to be at the forefront of this conversation. As a fertility tracking wearable, Tempdrop not only saves women the hassle of early morning wake-ups, it helps women track their cycle whether they’re trying to conceive or avoid, and whether they have irregular sleeping schedules or sleep soundly each night. 

Advisors On-Board

Dr. Talithia Williams, Ph.D. Statistics,
Rice University

Dr. Williams is famous for her popular TED Talk (over 1 Million views) about the insights she gained into her own fertility from meticulously tracking her own temperature. But with a PhD in Statistics, Dr. Williams is first and foremost a Mathematician, making sense of numbers and what they can tell us about our body and health.


Dr. Ari Shechter, Ph.D. Neuroscience,
Columbia University 

Dr. Shechter is a prolific researcher in the field of human Chronobiology. Some of his selected Publications include: 

  • Sleep, Hormones, and Circadian Rhythms throughout the Menstrual Cycle in Healthy Women and Women with Premenstrual Dysphoric Disorder. International Journal of Endocrinology Volume 2010
  • Circadian variation of sleep during the follicular and luteal phases of the menstrual cycle. SLEEP. 33(5):647-656.
  • Predominance of distal skin temperature changes at sleep onset across menstrual and circadian phases.  Journal of Biological Rhythms. 26(3):260-270.


Dr. Yossi Hasson

Dr. Joseph Hasson MD, OB/Gyn
Specialist in Gynecology, Obstetrics & Infertility

Dr. Hasson, specializes in treating infertility and is a Clinical & Research fellow at the Division of Reproductive Endocrinology & Infertility at McGill University Reproductive Center in Canada. Previously he was an attending physician at the IVF & Infertility Center at the Tel Aviv Medical Center in Israel.


Find our contact form here or email direct at contact@temp-drop.com.

Write to us at:

Tempdrop LLC
204 Paterson plank road
Union City
NJ, 07087