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Why is OvuSense different?

Whatever your cycle type, OvuSense provides the answers you need to improve your health, manage issues, and maximize your chances of getting pregnant.

OvuSense can predict your ovulation 24 hours in advance using information from your current cycle. It does this more accurately than ovulation predictor kits or monitors.

It then confirms the exact date of ovulation with up to 99% accuracy. No other home based test or monitor is able to do this.

It is the only device which can accurately screen for issues, show you the effect of diet and supplements, and monitor your treatment.

How does OvuSense work

OvuSense is a class 2 medical device with a free App and sensor you wear overnight.

Only OvuSense can help you understand when you will ovulate, the exact day of ovulation and your unique cycle pattern.

1 OvuSense App on a smartphone

Download the FREE OvuSense App to your phone, and set up your profile.
Apple App Store
Google Play

2 OvuCore insertion

Wear your sensor overnight.
The OvuCore sensor easily inserts in your vagina just like a tampon. The OvuFirst sensor is worn on your wrist or under your armpit with a band supplied with your order.

3 OvuSense App data updating

Download your data to your OvuSense App in the morning.

4 OvuSense Pro

If you choose, your doctor can remotely recommend and monitor treatment with OvuSense Pro.

Why should I trust the results?

Unlike other apps and products, OvuSense is a class 2 medical device which means it must be proven in clinical studies. These regulations also ensure your privacy is guaranteed.

The patent protected OvuSense technology takes multiple overnight continuous Core Body Temperature (cCBT) measurements a 1/1000th of a degree resolution.[a] cCBT tracks the rise and fall of Progesterone - the key hormone involved with regulating your cycle, getting pregnant and maintaining pregnancy.

99% accuracy confirming ovulation

What are the benefits?

Our clinical papers prove 99% accuracy for confirming ovulation using the OvuCore vaginal sensor [b][d], and 90% accuracy using the OvuFirst skin-worn sensor [e]. The OvuCore vaginal sensor also provides 96% positive predictive value for predicting ovulation [c][d]. This accuracy means OvuSense provides certainty over if and when you are ovulating, but can also be used to track your health and manage conditions like PCOS.

Other devices provide accuracies of up to 78% for the fertile window. In a 28 day cycle that means they can be up to 5 days out telling you on which days in your cycle you should try and conceive. With that wrong information your chances of getting pregnant can be reduced to around 5% per cycle.

Simple easy to use app tracks ovulation for you

What if I have irregular ovulation?

If you have irregular ovulation timing, then you probably already know it may take you longer to conceive. The really important fact is that urine strips and monitors (OPKs) and other temperature devices are much less likely to work for you. OvuSense is tracking the hormone released during ovulation and because it's able to predict that ovulation in real time during your cycle, it does work.

Urine strips and monitors use hormones which don't behave as expected if you have an issue like Polycystic Ovarian Syndrome that causes variable ovulation, so you end up with false positive results or no positive results at all. [f] Other temperature devices use your result from a previous cycle to provide your fertile window so they simply don't work if your ovulation occurs on a different day in your next cycle. [g]

Added to the chances of getting pregnant more quickly with OvuSense, there's no messy urine strips, no confusing charts, and no need to remember to test.

Clinically proven with scientific research

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OvuSense Pro

OvuSense Pro Portal

OvuSense® Pro has been designed to connect OvuSense users with their medical professionals. It helps your medical professional to time diagnostic tests, screen for common issues, and remotely monitor diet changes, supplements and treatments.

OvuSense Pro is included for FREE in your OvuSense Starter Pack.

You provide access for your medical professional(s) to your data through the OvuSense App. That means you're completely in control and can change that access at any time.

OvuSense Pro is accessed through an online web portal. You can login using your OvuSense App login, and can ask the OvuSense team to provide your medical professional with a login.

With OvuSense Pro your medical professional will be able to:

  • Remotely view your cycles and event logs, along with important cycle flags unique to OvuSense Pro which show if there are any unusual cycle characteristics.
  • Your medical professional will be able to understand the best time in the cycle to carry out in-office tests such as serum progesterone, ultrasound folliculometry, and further hormone testing.
  • You'll be able to talk to your medical professional about a dietary and/ or treatment plan, and look at the changes in your cycle patterns as a result of this change.

Example Screen

This example screen shows a cycle of 73 days with ovulation occurring on day 62. The phase after ovulation (luteal phase) is 11 days long.

The ability to see cycle changes easily is the main benefit of OvuSense Pro.

OvuSense Pro screenshot

    View the Miscarriage Avoidance OvuSense Pro case study

    This case study covers two consecutive cycles. You will see the initial cycle is 46 days long, with several unusual patterns are flagged by OvuSense Pro.

    The OvuSense user had one previous miscarriage. Her doctor decided to prescribe Letrozole and supplemented Progesterone in the following cycle and the cycle clearly returns to a normal pattern with sustained progesterone throughout the luteal phase after ovulation. The patient successfully conceived in the second cycle and stopped monitoring with OvuSense after 47 days.

    Cycle 1

    OvuSense Pro identifies Crash After Ovulation - this is a unique flag from OvuSense Pro which shows a risk of falling Progesterone after ovulation (potential Luteal Phase Insufficiency). Crash After Ovulation has been shown by clinical studies [1] to indicate an increased risk of miscarriage. As well as this OvuSense Pro identified a Short Luteal Phase, Late Ovulation and a Long Cycle are identified.

    OvuSense Pro cycle chart 1

    Cycle 2

    The OvuSense user discussed these flags with her doctor. She had a previous miscarriage, so the doctor decided to prescribe Letrozole taken at the start of the cycle (shown by the first orange dot on the chart), followed by supplemented Progesterone after ovulation (shown by the second orange dot on the chart). The OvuSense user became pregnant in that cycle, miscarriage was avoided and she continued with her pregnancy after she stopped monitoring with OvuSense on day 47.

    OvuSense Pro cycle chart 2

    Clinical Publications

    [1] 'Crash after Ovulation' is a novel cycle pattern characterised in Hurst B, Pirrie A (2019),where temperature (and therefore progesterone) was observed to fall rapidly after ovulation before the onset of the next period. Hurst B, Pirrie A (2019) showed that it occurs in 12.0% of total cycles from 16.0% of OvuSense users, so it is a common cycle characteristic that doesn't follow a typical pattern. As it suggests high progesterone falling after ovulation, it is thought to be associated with Luteal Phase Insufficiency and sometimes occurs alongside a 'short luteal phase'. Hurst B, Karoshi M (2020) shows a strong association with those that had a previous miscarriage


    View the Letrozole OvuSense Pro case study

    This case study covers three consecutive cycles. You will see the initial cycle is 73 days long, the next 47 days long. Then with Letrozole the cycle length is reduced to 32 days with ovulation on day 20.

    We see there is an issue with cycle length and late ovulation, then the clear change in cycle length as the result of the intervention.

    Cycle 1

    In this example the OvuSense user was 32 years old, trying to conceive 1-2 years before starting with OvuSense. During her first cycle of use a number of atypical cycle characteristics were identified, and although she ovulated it was late in the cycle.

    OvuSense Pro cycle chart 1

    Cycle 2

    The late ovulation is repeated in cycle 2 and Letrozole was prescribed by her clinician at the start of the 3rd cycle.

    OvuSense Pro cycle chart 2

    Cycle 3

    The Letrozole resulted in a much shorter follicular phase and ovulation nearer the middle of the month. OvuSense Pro successfully screens for cycle issues, provides actionable insights, and continued monitoring confirms (in this case) that treatment successfully restores ovulation.

    OvuSense Pro cycle chart 3


Clinical Publications

[a] The measuring resolution of a thermometer is the step between each temperature reading - a resolution of a normal 0.1 degree Celsius oral or skin temperature device means there is only one step between readings which are vital for understanding whether you ovulated, whereas the OvuSense sensors provide 1000 steps making them much more accurate.

[b] The accuracy measures how many positive and absent ovulations the device confirms correctly.

[c] The positive predictive value measures how many of the real time predicted ovulations OvuSense gets right.

[d] The accuracy of ovulation confirmation by OvuSense using the OvuCore vaginal sensor is based on the data set originally published at the 2013 ASRM meeting as a quality index: Papaioannou S, Aslam M (2013), and developed in the key publication outlining the accuracy and positive predictive value of advance prediction of ovulation shown at the 2014 ESHRE meeting: Papaioannou S, Delkos D, Pardey J (2014).

Hurst BS, Davies K (2022) Novel Technique for Confirmation of the Day of Ovulation and Prediction of Ovulation. Bioeng. Biotechnol.

[f] The chances of conceiving in each reproductive cycle are explored in the following clinical paper: Colombo B, Masarotto G (2000) Daily fecundability: first results from a new data base. Demogr Res 3: article 5. .

[g] The following papers together show that urine strips don't work if you have variable ovulation: McGovern PG, Myers ER (2004); Irons DW, Singh M (1994); Lloyd R, Coulman CB (1989);

[h] The following papers together show that other temperature monitors and fertility bracelets don't work if you have variable ovulation: Freundl G, Godehardt E (2003); Goodale BM, Shilaih M (2019)

Take control of your health and choose OvuSense today.

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