World's first AI saliva hormone tracker

Your cycle, read every morning.

One drop of saliva. Forty minutes later, your estrogen trend, fertile window, and cycle day are in your app — no strips, no refills, no guesswork.

$100 todayTHEN FROM $18/MO
Ovul device + 1-year unlimited testing
In stock · ships in 72 hours · free shipping
✓ Device + first month included ✓ Then $20/mo or $54/qtr ✓ HSA/FSA eligible · cancel anytime
4.8★loved by women in 30+ countries
30,000+ferning images train the AI
$100to start — then from $18/mo
$0in strips — reusable forever
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Three steps, one drop

Almost nothing from you.
Everything from one drop.

Split

Open your device and wait for the indicator light to flash once.

Drop

Use your finger to place one drop of saliva on the lens, then close it. No refills, no special procedure.

Check

In about 40 minutes your result lands in the Ovul app over WiFi — you don't wait around.

See the full science of saliva ferning →

A proven method, made effortless

Your saliva writes the pattern. The AI reads it.

As estrogen rises before your fertile window, your dried saliva forms fern-shaped crystals — a method recognized since the 1950s and traditionally read under a microscope. Ovul brings it home: lens, camera, and AI trained on more than 30,000 real ferning images.

How Ovul works

Why women switch

Built for real cycles — not calendar math

Track Perimenopause Onset
Unlimited Daily Testing
Support PCOS & Irregular Cycles
Zero Consumable Waste
Free App — No Refills
AI Ovulation Detection
Ovul app screens showing daily estrogen trends and fertile window

The free app

Your hormones, in plain language

AI pattern recognition interprets your sample in seconds and shows daily estrogen trends, your fertile window, and cycle insights — no lab, no subscription fees for the app.

Download on the App Store Get it on Google Play

The honest comparison

Still using cycle tracking apps?

Ovulation calendar apps were great, but it's time to step up your game. You deserve better — you deserve Ovul AI.

Ovul AI
LH strips
Calendar apps
Unlimited daily testing
✓
✕
—
No refills or consumables
✓
✕
✓
Tracks real estrogen trends
✓
✕
✕
AI pattern interpretation
✓
✕
✕
Works with irregular cycles
✓
Limited
✕
Perimenopause tracking
✓
✕
✕
Cost over 1 year
$100 + membership
$300+ in strips
Guesswork

Clinical voices

What doctors are saying

Saliva ferning became recognized as a fertility indicator in the 1950s and 1960s. Ovul uses this proven method to track estrogen trends.

“With AI pattern recognition co-pilot, it gives precise insights into ovulation status. Doctors find Ovul's technology innovative and helpful for managing women's reproductive health.”

Vasyl Kravchenko
OBGYN and gynecologist

“Determining ovulation in this way at home has become possible with the help of Ovul. This device is a convenient, cost-effective, non-invasive and simple way to determine ovulation. It is absolutely safe and understandable for every woman.”

Chaika Oksana
OBGYN

“The adoption of a convenient, cost-effective, and reliable method of ovulation detection is very important for women planning a pregnancy. Frequent visits to the doctor for ultrasound examinations can cause physical and psychological discomfort to women. And Ovul solves these issues.”

Kaminsky Anatoly
Head of the Clinic of Reproductive Technologies

Real women, real cycles

Loved for TTC, PCOS, and perimenopause ★★★★★ 4.8/5

Something new, modern and convenient
Been using it for several days now and I really love how easy it is to use! You get your results instantly, which is super convenient. The app is also very skin-friendly and simple to understand.
Nora · Verified buyer
Ovulation tracker device changed my life
Ovul has been a game-changer for me. The saliva analysis is easy to do, and the app provides clear, accurate insights. It's made understanding my cycle so much simpler.
Sarah T. · Verified buyer
Helped me understand my body
I love how non-invasive and user-friendly Ovul is. The technology is impressive, and it's really helped me feel more in control of my fertility.
Emma R. · Verified buyer
Hormone cycle tracking made easy
With Ovul, tracking my ovulation has gone from confusing to straightforward. The AI analysis is incredibly accurate, and I trust the results completely.
Jessica L. · Verified buyer
Best hormone monitoring device
Using Ovul has transformed my approach to family planning. The precision of the saliva analysis combined with the convenience of the app is fantastic.
Natalie M. · Verified buyer
My favorite electronic ovulation test
Ovul's innovative technology has made a significant difference in my fertility journey. It's reliable, easy to use, and gives me peace of mind.
Megan S. · Verified buyer

Membership, not a box of strips

Start for $100. Stay for $18 a month.

The device is yours. Membership keeps daily readings, AI analysis, and your cycle history in the app. No refills. Cancel anytime — you keep the hardware.

Due today $100 · device + first month. Then $54/qtr. Cancel anytime.

See what's included →

HSA/FSA eligible. 6-month money-back on the $100 device. Membership fees are non-refundable.

Ovul device and packaging

Smarter tracking starts with Ovul AI

One device. Daily readings. No strips.

$100 today covers the device and your first month of membership. Then $20/month or $54/quarter for unlimited saliva readings in the Ovul app. Cancel anytime.

$100then from $18/mo
Choose monthly or quarterly →
✓ Free shipping✓ 6-month money-back guarantee✓ HSA/FSA eligible

Before you decide

Frequently asked questions

No, the OVUL fertility tracker cannot detect pregnancy. While some wonder "will ovulation test detect pregnancy" or "would an ovulation test detect early pregnancy", OVUL is designed to track ovulation through ferning patterns in saliva and monitor estrogen changes. For pregnancy detection, you should use a dedicated pregnancy test.
Ovul works by analyzing ferning patterns in saliva, which change throughout the menstrual cycle due to hormonal fluctuations. This saliva test for ovulation uses AI-powered pattern recognition to interpret estrogen trends. Unlike a blood or saliva test for hormones done in a lab, Ovul is a non-invasive, at-home solution that also serves as a fertile window tracker and ovulation tracker online.
Yes, Ovul is ideal when trying to conceive. It's a digital ovulation tracker and hormone tracker device that helps identify your most fertile days by monitoring saliva changes. This increases your chances of conception compared to traditional methods or less accurate ovulation trackers online.
No, Ovul is not FDA approved as a contraceptive. However, as one of the most accurate fertility trackers, it can help women practicing natural family planning (NFP) by showing fertile and infertile phases.
Ovul offers several advantages over traditional urine and blood tests. It's non-invasive, easier to use, and doesn't require trips to the clinic. While urine and blood tests measure hormone levels directly, Ovul uses a saliva test for ovulation and tracks estrogen through ferning patterns, which naturally reflect hormone changes.
Yes, Ovul is designed as a user-friendly hormone tracker device. Just take a saliva sample and let AI analyze it. No calibration or complicated setup is needed. It's as simple as using a free fertility app.
Technically yes, but for the best accuracy, test in the morning before eating, drinking, or brushing teeth. This ensures the saliva sample is pure and gives more reliable results.
Yes, Ovul works even if your cycles are irregular. Its AI ovulation tracker detects patterns that urine strips may miss, making it among the most accurate ovulation trackers for irregular periods.
For the best results, use Ovul daily to track hormonal fluctuations. Ovul works as a daily hormone tracker and fertile window tracker, learning your cycle over time and improving accuracy.
Ovul tracks estrogen changes in saliva, visible as ferning patterns under the microscope. Research is underway to expand saliva testing to include progesterone saliva tests and other hormones.
$100 today gets you the Ovul device and your first month of app access. After that, membership is $20/month or $54 every 3 months ($18/mo). Membership is what keeps daily AI readings and your cycle history in the app. You can cancel anytime and keep the device; readings pause if membership lapses. The 6-month money-back guarantee covers the $100 device fee. Membership charges are non-refundable.
A saliva test kit for hormones is non-invasive, reusable, and accurate. Compared to urine strips, it's easier, cleaner, and more eco-friendly.

See all 15 FAQs →