Best Ovulation Tracker: Mira vs Ava vs OvuSense

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Best Ovulation Tracker: Mira vs Ava vs OvuSense

Countless women strive to have a thorough understanding of their menstrual cycle in order to optimize their fertility and increase their chances of conceiving.

One of the best ways for women to further grasp the individuality of their own menstrual cycle as well as reduce the overall amount of time spent trying to conceive is through the use of an ovulation tracker.

Ovulation trackers are available in many forms and most women tend to use ovulation predictor kits or those that are based on wearable sensor technology.

In this article, we’ll review the 3 best ovulation trackers and discuss the major pros and cons of each type.


TL;DR: What is the Best Ovulation Tracker?

  • Mira Fertility Tracker is the best ovulation predictor kit that comes in the form of a urine-based test paired with an analyzer that tracks your numeric LH and estrogen hormone levels. These levels are then used to identify when a woman’s most fertile days occur.
  • The best fertility bracelet is the Ava Fertility Tracker. It tracks 5 major physiological parameters including skin temperature, resting pulse rate, heart rate variability ratio, perfusion, and breathing rate. This data is then analyzed by the Ava app to detect a woman’s 5-day fertile window.
  • The OvuSense Fertility Monitor is the best ovulation monitor on the market. Women insert the OvuCore sensor vaginally and then wear it overnight to continuously measure their core body temperature (cCBT). The data obtained from these readings is then analyzed by the OvuSense app to predict ovulation up to 24 hours in advance with 99% accuracy.



Best Ovulation Tracker

Femtech (female technology) encompasses a wide range of technology and devices that are designed to support women’s health.

In more recent years, Femtech has become a critical component of women’s reproductive health, most notably in the realm of understanding each woman’s unique menstrual cycle and how it may affect their chances of conceiving.

Numerous tests and trackers have been developed to help detect women’s fertile windows and pinpoint ovulation. Examples of Femtech devices created for this purpose include:

  • Smartphone apps, such as ovulation predictors and menstrual cycle calendars
  • Wearable devices, such as ovulation bracelets
  • Insertable devices, such as vaginal monitors

Let’s take now take a quick look at how these tests work and the types of data their predictions are based upon.

Ovulation Test

Different ovulation tests vary in their approach to detecting a woman’s fertile window and pinpointing the exact day of ovulation.

Most tests use one of the following ways for estimating or detecting ovulation and the overall likelihood of conception:

  • Urine Test – This form of testing is used to detect numeric hormone levels, such as Luteinizing Hormone (LH) and estrogen. A sharp LH surge indicates that ovulation will occur within the next 1-2 days. Additionally, an increase in estrogen is also linked to a woman’s fertile window.
  • External/Wearable Device – A device is worn externally that monitors body temperature and in some cases additional physiological parameters, which fluctuates throughout a woman’s menstrual cycle and indicates whether or not a hormonal surge has occurred or is nearing.
  • Basal Body Temperature (BBT) – Women record their basal temperature immediately upon waking with an oral thermometer and track their readings daily throughout the month in order to determine the exact date of ovulation. This form of testing may also be used for predicting their upcoming fertile window
  • Internal Device (Vaginal) – A device is inserted vaginally that records core body temperature data. This form of temperature-tracking is more accurate than that of Basal Body Temperature (BBT) or readings taken externally, such as on the wrist or under the armpit.

Best Ovulation Tracker

Trying to decide which ovulation tracker is best is a hotly debated subject and relies upon several factors.

While some women prefer to use standard methods of testing, such as relying on urine tests or tracking BBT, other women may prefer the use of wearable devices that are easy to use, are non-invasive, and reduce some of the stress that’s associated with taking manual measurements.

However, there are women who may prefer the use of vaginal monitors which typically provide the most accurate and comprehensive results in comparison to other trackers but are slightly more expensive.

We’ll now review our list of the 3 best ovulation trackers currently available for women.

We’ve made sure to includes an ovulation predictor kit, an ovulation bracelet, and an ovulation monitor on our list for women who are interested in exploring the different options available for tracking.

Mira vs. Ava vs. OvuSense
Best Ovulation TrackersMiraAvaOvuSense
Device UsedTest Wands + AnalyzerBraceletVaginal Sensor
Type of TestUrinePhysiological ParametersCore Body Temperature
Recorded MeasurementsNumeric LH and Estrogen Hormone LevelsSkin Temperature, Resting Pulse Rate, Heart Rate Variability Ratio, Perfusion, Breathing RateOvernight cCBT taken every 5 minutes
Length of Fertile Window Detection6 Days5 Days8 Days
Irregular Cycle-FriendlyYes!NoYes!
PCOS-FriendlyYes!Yes, if cycle is regularYes!

Best Ovulation Predictor Kit – Mira Fertility Tracker

Mira Fertility Tracker Review

The Mira Fertility Tracker is an ovulation predictor kit (OPK) that allows women to test their quantitative estrogen and LH hormone levels from the comfort of their home.

Both hormones are correlated with ovulation and peak fertility and prior to ovulation, estrogen levels steadily increase and a sharp surge of LH indicates ovulation is about to take place within 1-2 days.

These numbers combined provide women with a 6-day fertile window that’s optimal for conception.

Mira recognizes that each woman has their own unique ovulatory patterns and that many women have issues with using standard fertility apps.

Most generic apps don’t take into account hormone levels, abnormal cycles, or other critical information that affect ovulation and impact trying to predict the optimal time to try to conceive.

Mira Fertility Tracker Options

Currently, there is 1 option available for the Mira Fertility Tracker – the Mira Fertility Plus Starter Kit.

This kit contains the Mira Analyzer and comes with 10 estrogen + LH testing wands. However, women can also purchase additional testing wands in sets of 20.

Here’s a closer look at what’s included in each starter kit:

Best Ovulation Tracker

How to Use Mira Fertility Tracker

Mira Fertility Tracker Review

The Mira Fertility Tracker is extremely user-friendly and the entire testing process takes no more than 20 minutes.

  1. First, you will need to collect a urine sample in the morning with one of the provided urine cups. Following the urine collection, you will then need to dip one of the testing wands into the sample for around 10 seconds.
  2. After dipping the wand into the urine sample, remove it and place it into the tracker for analysis. This process usually takes around 15 minutes to complete.
  3. Once the analysis has finished, the app will provide personalized information about a woman’s fertile window, such as their hormone baseline levels, and how their hormone surges correlate to ovulation.

This information is critical for knowing exactly when a woman should try to conceive and also enables women to have a better understanding of their own unique cycle.

Mira Fertility Tracker Pricing

The Mira Fertility Plus Starter Kit comes with 10 estrogen and LH wands along with the Mira Analyzer for $199.

Additionally, Mira offers a payment plan through Sezzle for US and Canadian customers with a 25% down payment and interest-free, 25% biweekly payments for those who are unable to pay the full $199 initially.

Additional costs associated with the Mira Fertility Tracker include replacement test wands which include a set of 20 estrogen and LH wands for $59.

Thankfully, Mira is HSA/FSA eligible for most plans and can be used during checkout to reduce the final cost. Some HSA/FSA plans may even cover the full cost.

Mira Fertility Tracker Reviews

Overall, most women who have used the Mira Fertility Tracker have left incredibly favorable reviews on the website. states that 96% of reviewers recommend Mira Fertility and the company has an overall rating of 4.6/5.0 stars based on 836 reviews.

Below are a few of the reviews left by women about their experience with Mira and how it aided them in their journey to a successful pregnancy:

Mira Fertility Tracker Review

Pros vs. Cons of Mira Fertility Tracker
Convenient and shipped right to your doorstep in a discreet boxSome users have reported issues with recent updates to the app
Available on direct website and AmazonThe device requires about 15 minutes to read a testing wand, which is not optimal for testing on-the-go.
Tracker is able to sync with app to upload data and analyze resultsInitial bundle starts well over $100.
The app tracks LH and estrogen levels, calculates ovulation predictions, and provides other details about your menstrual cycle, BBT, cervical mucus, and more!90-day money-back-guarantee is only available if no LH surge was detected in your cycle while using it properly (refunds for other returns are on a case-by-case basis)
Studies for both the LH and estrogen tests have shown accuracy to greater than 99% when compared to in-hospital laboratory testing.Some women may prefer tracking ovulation through taking BBT or using wearable or insertable devices instead

Best Fertility Bracelet – Ava Fertility Tracker

Best Ovulation Tracker: Mira vs Ava vs OvuSense

The Ava Fertility Tracker provides women with a hassle-free, non-invasive way to track their fertile window and detect ovulation.

This fertility bracelet is designed to measure 5 physiological signals of fertility that are used towards detecting a woman’s 5-day fertile window.

Ava is designed to be worn during the night and then synced with its app in the morning.

Unlike standard fertility trackers or retrospective temperature methods, the Ava Fertility Tracker provides women with results in real-time and produces higher accuracy results.

Ava Fertility Tracker Options

Ava Fertility offers the following 3 plans for its fertility bracelet:

  • Ava Basic – This starter plan includes the Ava bracelet, Ava app, membership to the Ava online community, and free shipping.
  • Ava Plus – This plan provides everything that’s included with the basic plan PLUS a 100% product refund if you fail to become pregnant within 12 months. Additionally, this plan also includes access to The Ultimate Guide to Getting Pregnant e-book
  • Ava Premium – The third and final option for the Ava Fertility Bracelet bundle includes everything mentioned previously, however, this plan provides a full refund if a woman fails to conceive after trying for 6 months.

How to Use Ava Fertility Tracker

Best Ovulation Tracker

The Ava Fertility Tracker is extremely easy to use!

  • Women should wear the bracelet while sleeping to allow it to collect continuous data throughout the night.
  • Upon waking, women can sync the bracelet with the app to upload the data obtained overnight and allow Ava’s algorithm to display their results immediately.

It’s important for women to wear the bracelet every night during their entire menstrual cycle in order to capture all of the physiological changes that occur that may impact their ovulation and overall fertility.

The Ava Bracelet collects data on the following 5 parameters throughout the night which are used towards detecting a woman’s fertile window, predicting the exact day of ovulation, and providing a better look at their overall health:

Best Ovulation Tracker

Ava Fertility Tracker Pricing

Best Ovulation Tracker

Ava Fertility provides women with relatively affordable options for clinically-backed wearable sensor technology.

The least expensive option available is the Ava Basic plan, which costs $259, and the most expensive option is the Ava Premium plan, which is priced at $359.

The major differences between these plans are the inclusion of a free e-book with the premium plan along with a guaranteed full refund if a woman fails to conceive after trying for 6 months.

However, most women choose the Ava Plus plan as it provides the best overall value and also offers a full refund if pregnancy is not achieved after trying for 12 months.

Ava Fertility Tracker Reviews

Best Ovulation Tracker

Overall, the Ava Fertility Tracker has extremely positive reviews.

Nearly 80% of women on Trustpilot (~1,300 individuals) left a rating of great or excellent for this product.

The majority of these reviews left comments about how the bracelet…

  • enabled them to conceive children faster
  • made the conception process easier
  • helped women to conceive within 3 months of actively trying
  • eliminated stress associated with manual measurements
  • was much more reliable than standard ovulation tracking apps and test strips
Pros vs. Cons of Ava Fertility Tracker
Non-invasive and easy to useSome women may find wearable technology slightly uncomfortable at night
Worn overnight onlyMust be worn throughout the entire menstrual cycle for accurate predictions
2 of the 3 plans offered provide a full refund if pregnancy is not achieved within a certain timeframeThe basic plan does not offer a refund if a woman fails to conceive
Relatively affordable options for clinically-backed technologySome women may prefer cheaper methods, such as ovulation predictor kits or standard apps
Tracks data on 5 different physiological parameter to help improve predictions and provide insights about overall healthData and predictions can be thrown off by lifestyle modifications or changes, such as drinking alcohol or using certain medications

Best Ovulation Monitor – OvuSense Fertility Monitor

Best Ovulation Tracker

The OvuSense Fertility Monitor is a subscription-based, sensor technology that continuously measures a woman’s core body temperature (cCBT) while sleeping.

This ovulation tracker comes in the form of an easy-to-use OvuCore sensor that is vaginally inserted prior to sleeping and taken out immediately upon waking.

The OvuCore sensor pairs with the OvuSense App and provides data in real-time which is used towards predicting ovulation up to 24 hours in advance as well as for providing a full 8-day fertile window at the start of a woman’s following menstrual cycle.

This form of ovulation tracking is considered to be more accurate than other trackers and provides better data on temperature when compared to BBT or wearable sensors.

OvuSense Fertility Monitor Options

OvuSense offers 3 major plans for its fertility monitor starter pack.

Women can choose between a monthly or annual plan and also can select from the standard or pro plan, depending on whether or not they’re currently working with a doctor or are planning to in the near future.

Here’s a further look into the starter pack options available for OvuSense:

Best Ovulation Tracker

How to Use OvuSense Fertility Monitor

Unlike other trackers, the OvuSense Fertility Monitor is an internal monitor that should be worn overnight.

Here’s an overview of how it works:

  1. The OvuCore sensor is inserted vaginally and worn during the night.
  2. Upon waking, the OvuCore sensor should be removed and thoroughly cleaned prior to syncing with the OvuSense app.
  3. The OvuSense app will provide live updates on predicting ovulation and will allow women to know up to 24 hours in advance of their expected day for ovulation. The app will also provide women with their 8-day fertile window for their upcoming cycle to further increase their chances of conceiving.

OvuSense Fertility and Ovulation Monitor Pricing

Best Ovulation Tracker

Similar to Ava Fertility, OvuSense offers 3 options for its OvuCore Starter Pack.

The least expensive option is the OvuCore Standard Monthly plan which is priced at $129.

The most popular option is the standard annual plan which is available for $299, however, there is also another annual plan available for $449 that provides further and more advanced analysis along with remote monitoring for doctors.

Additionally, women who are already subscribed to OvuSense may choose to extend their subscription for the following discounted rates:

Best Ovulation Tracker

OvuSense Fertility Monitor Reviews

Best Ovulation Tracker

Although there are only 30 reviews currently available, Trustpilot provides OvuSense with an overall 4.2 rating.

83% of reviewers have provided either great or excellent ratings about the fertility monitor and have left comments such as the following:


“Ovusense has helped me to fully understand how my body is working and where we may have been going wrong previously… I would use Ovusense every time when trying to conceive”

-Nicola B.


“I started using the OvuSense device in January 2019 and my son was conceived on the fifth cycle. At 39 and 50 my partner and I had been having no success in conceiving and had begun to put it down to biology but using OvuSense allowed us to pinpoint ovulation and identify that I had a slightly short luteal phase. ”

-Laura Abbott


“Taking my temperature any other way, never worked for me. I never knew if I was doing it right. But with OvuSense, it did all the hard work for me. Wearing the sensor every night was so simple. Doctors didn’t think I ovulated. I learned with OvuSense that I actually did ovulate and by the second cycle knew when to baby dance to try to have a baby.”

-Amy W.


Pros vs. Cons of OvuSense Fertility Monitor
3 plans available for the OvuSense Fertility MonitorSome women may prefer trackers that aren’t subscription-based
Easy to use and doesn’t require manual measurementsSome women may find the vaginal monitor uncomfortable
Remote monitoring available for doctors with OvuSense ProOvuSense Pro is more expensive than other 2 options
Intelligent filtering system excludes ‘spikes’ when calculating ovulationReadings may be affected by factors such as fevers or drinking alcohol
Provides 8-day fertile windowWomen can only conceive ~5 days per cycle

The Verdict – Which Ovulation Tracker is Best for Me?

Choosing which of the above ovulation trackers is best for you depends on several factors, such as price limit, ease of use, and overall comfort.

If you’re searching for the best ovulation predictor kit, we suggest using the Mira Fertility Tracker. This form of ovulation testing is non-invasive and is the most affordable option from the 3 trackers we reviewed above.

If you’re interested in external or wearable sensor technology, we highly suggest the Ava Fertility Tracker. Ava’s fertility bracelet should be worn overnight and tracks 5 major physiological parameters that are used to predict ovulation and provide a detailed overview of a woman’s overall health.

Finally, if you’re looking for a subscription-based and highly accurate sensor, we recommend the OvuSense Fertility Monitor. This tracker involves the use of an insertable vaginal monitor that records cCBT and is used towards predicting an 8-day fertile window.

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