App-based saliva ovulation tracker

The last ovulation test you’ll ever buy.

One reusable device. Unlimited daily testing. Real-time estrogen readings from a single drop of saliva — no strips, no refills, nothing to rebuy.

Choose a membership

$149.99 todayTHEN FROM $18.99/MO

✓ Real-time estrogen readings ✓ Unlimited daily testing ✓ HSA/FSA eligible

1.8×tests per day, on average

30,000+images used to train the AI

40 minto your in-app result

1945ferning technology heritage

Daily hormone tracking

AI Saliva Estrogen Test for Daily Hormone Tracking

Ovul AI is a next-generation fertility tracker app powered by a saliva hormone-testing device. Designed for unlimited daily use, the Ovul app delivers real-time estrogen readings — not just predictions — making it the best ovulation tracker for accuracy and control. Unlike traditional basal body temperature charts, Ovul uses advanced femtech to provide instant insights into your hormonal patterns.

Track with hormone data

Track your cycle with hormone data — not dots on a calendar.

Predict ovulation

Predict when you are ovulating with unlimited daily AI estrogen monitoring.

Manage hormone health

Support PCOS, perimenopause and menopause.

Three steps, one drop

How the Ovul Ovulation Tracker Device Works

Three-step process — analysis, AI interpretation, and results in-app in under 40 minutes.

Split

Open the device and wait for the indicator light to flash once. After the light flashes, the device is ready to use.

Drop

Use your finger to deposit a drop of saliva onto the analyzer slide.

Check

Close the device to start the analysis. Your results will be sent to the Ovul App.

▶ How to Use Ovul: Step-by-Step Guide

Ovul app based ai saliva fertility tracker and hormone monitor app screen displaying Ovul App functionality

The free app

Ovul App — Digital Ovulation Machine for Cycle Tracking

Unlike basic period tracking apps, the OVUL APP combines your input — calendar data — and saliva test to deliver the most accurate, AI-powered insight in under an hour. Designed for unlimited testing, Ovul makes it easy (and surprisingly fun) to test daily. In fact, most users test 1.8 times per day, because seeing your hormone data in real time changes everything.

Download on the App Store Get it on Google Play

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

Ready to replace your calendar?

A Smarter Ovulation Tracker Device

Try our ovulation tracker kit — the Ovul AI App, a leading femtech innovation and digital ovulation monitor — risk-free. Get one year of unlimited access and a 100% money-back guarantee. Track fertility, predict ovulation, and monitor estrogen trends with just a drop of saliva. No risk, no commitment — just science-backed clarity.

$149.99then from $18.99/mo

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12 months Ovul AI App subscription is on us — $9.99 USD/month after 1 year.

✓ Free shipping✓ 6-month money-back guarantee✓ HSA/FSA eligible

Get 10% off your first order

Start your hormone tracking journey with a 10% discount. Sign up to save today and take the first step toward a deeper understanding of your cycle.