About OvuSense | OvuSense Fertility and Ovulation Monitor

What does OvuSense do?

24 Hour Advance Prediction

24 Hour Advance Prediction

A 'short range' ovulation forecast from cycle 1. Unlike other methods, OvuSense predicts using data in the current cycle. So it works even if you have variable ovulation or cycle lengths.
99% Accurate Ovulation Detection

99% Accurate Ovulation Detection

OvuSense provides a clinically proven date of ovulation. OvuSense then shows an 8 day fertile window for your next cycle - a 'long range' forecast for your ovulation.
Tracking Your 'Fertility Fingerprint'

Tracking Your 'Fertility Fingerprint'

Cycle characteristics are your unique 'fertility fingerprint'. OvuSense cycle tracking provides vital information for you and your clinician. Visit our cycle characteristics page to learn more.
Monitoring Medication

Monitoring Medication

Only OvuSense allows you to track how medication and/ or supplements affect your cycle pattern. Giving you and your clinician the confidence that the treatment is working.

How does OvuSense work?

OvuSense Sensor is worn in the vagina overnight and takes your core body temperature every 5 minutes. In the morning, simply download your data to your phone or tablet via the OvuSense App.

What’s the difference between OvuSense and other methods?

By measuring core temperature OvuSense mirrors the rise and fall of progesterone in the body. Unlike OvuSense, skin and oral temperature methods cannot see the start of the rise in progesterone associated with ovulation which is why they can't be used to predict ovulation in advance in the current cycle. Urine testing is unreliable for women who struggle to conceive because of ovulatory problems, and other methods such as pulse measurement are clinically unproven. Crucially, no method other than OvuSense can be used to accurately track your cycle characteristics.


OvuSense pregnancy stories


Independent Fertility Nurse, Kate Davies, explains OvuSense


OvuSense App and Sensor
  • OvuSense has two parts: medical-grade vaginal Sensor and App.
  • OvuSense Sensor fits comfortably in your vagina, similar to a tampon, and has proven comfortable for women in over 10,000 cycles of use.
  • OvuSense is used at night while you sleep, leaving you to get on with your day.
  • In the morning simply remove the Sensor, wash it, and download your data to see your cycle pattern.
  • OvuSense takes a reading of your 'core body' temperature every 5 minutes, all night long, to provide you with an extremely accurate average daily temperature measurement using our patented algorithm.
  • No radio waves are transmitted from within your body, so OvuSense is completely safe to use.
  • OvuSense uploads data to a secure cloud database, keeping your information safe.
  • OvuSense can predict ovulation up to a day in advance and detects the exact date of your ovulation, with clinically proven 99% accuracy.

First time use

First time use

Begin using OvuSense straight after menstruation ends. OvuSense starts monitoring your temperature right away.
Ovulation prediction

Ovulation prediction

After a few days OvuSense predicts the onset of your ovulation.
After ovulation detection

After ovulation detection

3 days after you ovulate, OvuSense gives the ovulation date. You can stop using your sensor for this cycle.
Second cycle use

Second cycle use

Begin using OvuSense straight after menstruation ends. OvuSense then predicts your next fertile window.
Ovulation prediction

Ovulation prediction

OvuSense flags the start of your fertile window, followed by the ovulation window.
After ovulation detection

After ovulation detection

3 days after you ovulate, OvuSense gives the ovulation date. You can stop using your sensor for this cycle.

Listen to The OvuSense Podcast