Saliva Ovulation Test with Automated Pattern Recognition

Get pregnant sooner!

Get pregnant sooner! Non-intrusive and reusable way to detect your most fertile days from a single drop of saliva!

How does Babyndex work?

A few days before you reach your most fertile days, changes happen to the structure of your saliva. It starts to crystalize in a different way. Using our automated application helps you interpret the saliva test and our advanced algorithms significantly increases its accuracy. Eventually, we make it faster and easier to predict when you are most likely to conceive! The saliva test is FDA-certified and beside the Babyndex team Harvard Medical School authors have also extensively studied automated detection of saliva crystals.



You can use Babyndex as many times as you want. This way, you can save a lot compared to purchasing loads of single-use hormone stripes on the market!



A 2018 study by Harvard Medical School showed that saliva test can predict ovulation with more than 99% accuracy, if complemented with automated crystal detection.



Your saliva crystallizes during your fertile days. Hence women with irregular cycles can also use Babyndex. There is no need for months of body temperature data.


All you need is a high-quality ovulation microscope and the Babyndex app!

Babyndex is an easy-to-use solution that only requires a small microscope and a smartphone with the Babyndex application installed!

Get app now:

*Running on iOS 11.0 or later and Android KitKat or later

Get ovulation prediction in minutes

We’ve made sure that Babyndex is super easy to use. Take the test every day for a full cycle and then regularly during the expected fertile phase. It takes 3 steps and a few minutes of your time to analyze your saliva crystallization and to predict your ovulation:


Place a drop of saliva on the microscope we supply and wait for about 10 minutes for it to dry.


Take a photo with the Babyndex application by holding the microscope against the camera of your mobile.


See if you are in your fertile days. The application analyzes crystallization and predicts ovulation.

Customer reviews

MARIABudapest, Hungary
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I use an ovulation microscope because I was told that saliva test might work even with unstable cycles. I was not convinced at a first glance because I have small crystals almost every day, but the Babyndex app analyzes the level of crystalization and it really starts to increase a few days before ovulation. The app is easy to use, a bit too simple but this is still the only one for saliva fern test.
JAZMINDebrecen, Hungary
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We were trying to get pregnant for years so I know how important it is to understand my body. I was using a saliva microscope already but Babyndex app takes it to a new level. I like how I don’t need to guess my own interpretation but can trust the app to do its job!
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It is an excellent tool for easily and quickly detecting from saliva whether we have ovulation and when we are in our most fertile period. It greatly helps to achieve a desired pregnancy, which in my opinion is both faster and easier in this way than with various urine tests. It took me a while to learn and come up with how much saliva to put on the microscope, to wait patiently. Today, in the pre-ovulation period, the crystals are nicely outlined and, thanks to the application, it is easy to look back at any time how a certain cycle has developed. I have been using it for 3 months, but I would like to continue as well, I am confident that in the short term this too will be one of the foundations of our success and will bring the long-awaited result.