Karagan here, the founder of S’moo! I wanted to dive into one of the most common questions we get ask here at S’moo: 

What is the best way to track ovulation and fertility? 

There are a ton of options out there to track your ovulation and fertility but I wanted to find out myself what one worked best! So I decided to try out some of the top ranked fertility and ovulation tracking technology so I could get YOU the details!

In this article, I'm going to walk through the pros and cons of both of the Mira & the Kegg and which one I felt was best for PCOS sisters who are trying to learn more about their hormones, and their cycles and also those who are currently trying to conceive.

What is Ovulation and Fertility Tracking Technology?

Ovulation and Fertility Tracking Technology helps you accurately predict ovulation days, peak fertility days, luteinizing hormone (LH) levels, menstrual cycles and ultimately help in your fertility journey.

Why the Mira & the Kegg?

I started with the Mira Analyzer and the Kegg because both claim to cater to PCOS and irregular cycles. I gave both of them an equal shot for 2 weeks before deciding which one I’d stick with for the long-haul.

Let's get started with about each of these monitors, then I'll get more into my experience! 

Mira vs. Kegg Fertility Monitors


Kegg Fertility

The Kegg is a fertility monitor primarily, and measures your fertility daily by analyzing your cervical mucus. The Kegg also has an additional functionality outside being a Fertility monitor, as a Kegel ball for exercising pelvic floor muscles. 

Mira Fertility

Mira provides a daily “Fertility Score” which gives you your chances of conceiving on any given day based on your actual Estrogen and LH levels. This data is automatically sent to the Mira Fertility Tracker App for iOS and Android via Bluetooth.

How to use: 

Kegg Fertility: With Kegg, you use it daily when you are not on your period. Every morning, you insert the Kegg into your vagina and it'll give two buzzes to let you know that it is starting the reading. It'll ask you to stand still while it takes the reading. Once the reading is complete, you'll remove the Kegg and it'll sync with the app and put it on your graph so you can see your fertility over time. You'll also have a spot to record other notes such as BBT, LH Tests and more.

Mira Fertility: With Mira, it is advised to track every day when not on your period and at the same time daily. I personally do it first thing when I wake up. Similar to standard LH strips, you simply dip the Mira Test Wands in your urine for 10 seconds and insert into the Mira Analyzer. The Analyzer takes 16 minutes to determine your E3G (Estrogen) and LH levels before syncing to your phone. 


Kegg Fertility: Kegg's claim to fame is measuring cervical fluid and talk about cervical fluid being the "best predictor of fertility over standard urine tests, calendar calculations, or temperature tracking alone because it’s unique, like you." They do not make an accuracy claim but they do have a 12 month pregnancy guarantee: If you aren't pregnant in 12 months, you get 100% of your money back.

Mira Fertility: Mira claims to have 99% accuracy in detecting the Estrogen and LH hormone surge which is a main indicator of ovulation. Knowing your specific fertility hormone concentration levels helps to increase your chance of conception. While testing with the Mira, I do find that the risk of a false positive seems low to non-existent which is huge especially if you are currently trying to conceive. 


Kegg Fertility: I was really drawn to Kegg because right off the bat, I could tell it was going to be much less expensive. It's a steep $249, but it's a one time cost and has an additional functionality outside being a Fertility monitor, as a Kegel ball for exercising pelvic floor muscles. You can also use FSA/HSA plan to buy Kegg which is a huge win.

Mira Fertility: Mira runs $199 for the monitor and comes with 10 test strips on Amazon. However, it does require rather pricey ongoing test strips which will run you anywhere from $45-$80 a month depending on what you're tracking. 

Pros & Cons:

Kegg Fertility 


  • Less Expensive at a (1) Time Cost of $249.

  • Has dual functionality of fertility monitoring, fertility journal, and a kegel.

  • Takes only 2 minutes to get results.


  • No actual hormone levels (LH/E3G) given.

  • Vague line graph that isn't as clear as Mira.

  • More manual inputting and less AI abilities

  • Feels like it could be gimmicky due to lack of actual numbers and understanding of how the technology actually works.

  • No case, but comes with charging station.

Mira Fertility 


  • Measure actual hormone levels (LH, E3G, PdG) with test strips

  • Clear line graph that shows LH, E3G, PdG and BBT that is easier to understand than Kegg

  • Much easier to understand and learn about your body and your menstrual cycle.

  • AI Technology helps with cycle prediction, fertility window, non-fertile window and ovulation so you can plan ahead.

  • Long lasting battery, and more sanitary by nature. Comes with nice zip case.


  • Much more expensive than Kegg due to the test strip prices. $199 up front, and $45-80 a month.

  • Takes 16 minutes to get results (however you can walk away and sync later which I love)

My Final Thoughts

Kegg Fertility 

I was really excited to try the Kegg, and was hopeful it would be my ovulation monitor of choice. Mainly due to the huge cost savings in comparison to the Mira. Before I get into my experience, it's important to note that I'm not currently trying to conceive, and that in this test, I was looking to get more information then I could get from basic LH testing strips.

Upon using the Kegg… I felt that the information they provide is too vague for me personally to justify it over basic LH test strips. Here's a couple of reasons why:

  • I found that the chart they provide on their mobile app wasn’t intuitive or informative enough. There are two lines they track, but the graph doesn’t have a key to go alongside it, so it’s very nuanced as to what you’re actually looking at.

  • There isn't a lot of information on how the technology actually analyzes your cervical mucus… And I hate to say that I felt a little uneasy not knowing if the results are accurate without actual information and data on this. If I had been using this for fertility, whether to try to conceive or prevent conceiving… I'm not sure I would trust this wholeheartedly.

To wrap the Kegg up... If you are just looking for a baseline understanding of your fertile days and a lower cost alternative, this might be a good fit for you… But if you're looking to better understand your cycle and your hormones, I would recommend going with the Mira.

Mira Fertility 

I have to admit, I absolutely fell in love with the Mira the moment I used it. The Mira is so incredibly intuitive, easy to use and the results it is able to give you in just 16 minutes are absolutely fascinating and beneficial to anyone who is trying to better understand their cycle, hormone health and fertility without always having to make a doctors appointment.

The Mira makes it easy for anyone to understand how your hormones work throughout your whole entire cycle, without much guidance at all. It's been so fun to track my actual hormone numbers, and see how the graph shows them throughout my cycle and leading up to my ovulation days. Additionally, the Mira has done a great job at cycle prediction, which is a huge plus if you have PCOS and irregular cycles.

The Mira tracks estrogen and LH levels, but also has the ability to track PdG levels at the same time all with one test strip. While the strips are expensive, I think it's worth the splurge while trying to conceive or throughout your hormone health journey to better understand your cycle.

I would highly recommend the Mira to anyone with PCOS or a regular cycles, and for those who are trying to conceive because it gives you the ability to really learn and understand your body by tracking easily each morning. I'm so excited about this tracker and I hope you love it as much as I do!

What is the best fertility tracker for PCOS?

Personally, for me and me speaking to other PCOS Cysters... I would whole heartedly pick the Mira and think it's even worth the splurge to just better understand your body and cycle before you start trying to conceive.  


After using both the Mira & the Kegg, I have nothing bad to say about either of them. I think they are both great buys depending on what you're looking for.

If you decide to try either of them out, be sure to let us know what you think and share in our community so others can learn about these trackers & find the one best for them!

 To purchase either of these trackers, here are links to them both:

Mira Fertility  

Save 15% off Mira with code: SMOO

Kegg Fertility