
Archived App (Last seen on 16 Nov 2025)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This app uses a mini microscope and image analysis to detect saliva crystals, helping you identify your fertile window. It offers a natural and affordable way to track ovulation, with high accuracy based on scientific studies.
What's New in Babyndex Saliva Ovulation Test
1.2.1
October 21, 2022
Added a delete account button in which you send an email to support with the request to delete your data
User reviews
FAQ
How does Babyndex detect fertile days?
Babyndex uses a mini microscope to capture images of dried saliva samples. The app's algorithm analyzes the saliva crystals, which form when estrogen levels rise, to determine your fertile window.
How accurate is the Babyndex saliva test?
According to a Harvard Medical School study on similar solutions, the accuracy of automated crystal detection in saliva ovulation tests is higher than 99%. The FDA has also approved saliva tests for ovulation prediction.
Is Babyndex suitable for everyone?
Babyndex should only be used if you are not using hormonal contraception, as your natural hormones regulate your ovulation cycle. It is designed for individuals seeking a natural way to track fertility.
How does Babyndex compare to urine ovulation tests?
Urine LH tests predict ovulation about one day ahead and are non-reusable and expensive. Babyndex, using the saliva fern test, can predict ovulation about three days ahead and is reusable and more affordable.
What is the cost of Babyndex?
The Babyndex application is free to download and use. The primary cost is for the reusable mini microscope, making it an affordable alternative to disposable test strips.
On which devices can I use Babyndex?
Babyndex is available for iPhone, iPad, and iPod devices, indicating compatibility with Apple's iOS ecosystem.
How often should I use Babyndex?
To effectively detect your fertile days, it is recommended to take the test every day during your cycle. This allows for consistent tracking and better prediction of your fertile window.
What is the age rating for Babyndex?
Babyndex has an age rating of 12+, suggesting it is suitable for users aged 12 and above.







