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Summary
The Inito Fertility Monitor is an at-home hormone monitor that helps you understand your cycle with clear, precise hormone values – not just predictions.
It measures four key fertility hormones – E3G (estrogen), LH (luteinizing hormone), PdG (urine metabolite of progesterone), and FSH – from a single Fertility Strip.
This means you don’t just see when your body might ovulate. You can actually confirm if it did.
Built on published research and designed for real-life cycles, Inito brings together hormone tracking, ovulation prediction, and confirmation in one place, so you can move from guessing to knowing.
What Is Inito? Who Is It For?
If you’ve ever tracked your cycle and thought, “Am I doing this right?” — you’re not alone.
Most tools today give partial answers. A line that’s darker than yesterday. A temperature shift after it’s already too late. Or an app prediction that keeps changing.
Inito is built to solve that gap.
It shows you how your hormones change across your cycle—not just one moment in it—so you can understand when your fertile window actually opens, which days matter most, and whether ovulation really happened.
It’s designed for anyone trying to conceive or simply trying to understand their hormones better, especially if your cycles don’t follow a textbook pattern.
It works for:
- Regular cycles
- Irregular cycles
- PCOS (polycystic ovary syndrome)
- Thyroid disorders
- Post-pill transitions
- Post miscarriage
- 35+ women
Because your cycle doesn’t follow averages, your tracking shouldn’t either.
Which Hormones Does Inito Measure And Why Does That Matter?
Instead of relying on one signal, Inito tracks four hormones together:
- E3G (estrogen metabolite): rises 3-4 days before ovulation, signaling the start of your fertile window
- LH (luteinizing hormone): surges 24-36 hours before ovulation, triggering follicle rupture and egg release
- PdG (urine metabolite of progesterone): rises after ovulation and confirms it actually occurred
- FSH (follicle-stimulating hormone): tracks early-cycle follicle development
On their own, each hormone tells part of the story. Together, they show the full picture—so you’re not relying on a single moment to understand your cycle. That’s what allows Inito to identify your full fertile window (up to 6 days) and confirm ovulation, not just predict it.
Published studies in Nature’s Scientific Reports Journal have shown that Inito’s urinary hormone patterns closely match corresponding blood hormone trends (around 95% correlation1), supporting how these hormone shifts reflect what’s happening in your body.
Most ovulation tests only track LH. That means they can tell your body is trying to ovulate, but not whether it actually did. Inito confirms ovulation by tracking a sustained rise in PdG, with over 99% specificity and 92.2% precision as per studies published in Nature’s Scientific Reports Journal.
Read more: Is Inito Precise? Why Does It Matter?
Why Aren't Most Fertility Tracking Tests Enough If You're TTC?
Most fertility trackers are designed to predict ovulation, not confirm it. They typically track only LH, rely on fixed thresholds, and show simple yes/no results. That works for some cycles, but not all. In practice, this can lead to multiple false results (positive in case of PCOS and negative in case of LH levels below the average thresholds) in one cycle, confusion about which day actually mattered, and no clear confirmation of ovulation. And if your cycle is irregular or has multiple LH surges, this confusion gets worse.
This isn’t because you’re doing something wrong. It’s because the method is limited.
Inito takes a more precise approach by looking at how multiple hormones change together across your cycle, so you’re not relying on a single signal to make important decisions.
How Does Hormone Tracking Change The Approach?
Instead of asking “Did LH cross the threshold today?”, hormone tracking looks at how your hormones are changing together across your cycle.
This shift matters because fertility isn’t a single moment—it’s a pattern.
By tracking Estrogen, LH, PdG (urine metabolite of progesterone), and FSH together, you can see your fertile window as a timeline, understand your hormone patterns across days, and confirm ovulation based on real changes.
This approach helps improve consistency in readings and gives you clearer hormone trends across your cycle.
So you’re not relying on a single result, you’re looking at how your body is actually behaving across the cycle.
How Do I Use Inito?
Testing shouldn’t feel like something you have to plan your morning around. With Inito, the process is simple:
Step 1: Dip. Use the cup provided to collect urine, and dip the Fertility Strip vertically for exactly 15 seconds. The in-app timer means you don’t need to count!
Step 2: Test. Cap the Fertility Strip and place it flat on a stable surface. This ensures urine flows evenly across the strip for the most accurate results. Slide the Fertility Strip into the InSight Wireless Reader™ (the new variant of the Inito Fertility Monitor). The Inito app confirms everything’s connected and ready, then on-screen prompts guide you through the final stage.
Step 3: Go. Let the test run in the background (for 10 minutes) while you go about your morning; once you receive the test completed notification, return to remove and discard the used Fertility Strip. No docking, no hovering, no keeping the app open.
Know more: A Complete Guide to Testing with the Inito Fertility Monitor
Stories from Inito Users
“Prior to Inito, I had a hard time pinpointing my actual fertile window. Using regular OPK strips, I would get a week of high readings, leaving me confused about when my actual peak day and ovulation were occurring. Once I started using Inito, I could clearly see my high fertility days and a definite peak day before ovulation. When I got my postpartum period back at 3 months, I used Inito again and conceived my second healthy rainbow baby the very next month!”
— Andjela Dragojevic
“Before using Inito, I was tracking my BBT and using cheap ovulation strips. It worked to an extent, but it often left me second-guessing whether I was timing things right. I came across Inito on TikTok and loved how easy it was to track various hormones to successfully identify the peak fertility timeline each cycle. It helped me detect my peak fertility window — something I would’ve completely missed otherwise.”
— Sri Lekha E
“What stood out to me was that Inito measures four different hormones: Estrogen, LH, PdG, and FSH. That was a game-changer for me. Inito helped me uncover that I was having several anovulatory cycles. Eventually, I decided to see a reproductive endocrinologist. She was genuinely intrigued by my Inito charts. Inito gave me the clarity and confidence to seek help sooner.”
— Amanda Burghauser
Most ovulation tests rely on a single hormone and limited signal capture, which can make results harder to interpret, especially when cycles vary and with different lighting and surrounding conditions.
Inito takes a different approach. The InSight Wireless Reader™ uses patented Spectral Mapping technology to:
- Measures each hormone separately on one test strip
- Uses dual detection signals (fluorescence + color imaging) to cross-check readings before showing results
- Captures the entire strip using a built-in camera, which gives the system a deeper, richer set of information to work from before generating the final reading.
What this means for you is simpler: clearer trends, more consistent readings, and results you can trust test after test.
Why Are Other Fertility Tracking Methods Incomplete On Their Own?
| Methods | Limitation |
| Ovulation tests (LH-only) | Predict ovulation, don’t confirm it |
| BBT | Shows results after ovulation (too late for timing) |
| Cervical mucus tracking | Subjective and inconsistent, cannot track or confirm ovulation |
When used alone, each method leaves gaps. That’s why many people end up combining methods – but still feel unsure.
How Do Insights Adapt To Your Cycle (Not Averages)?
Here’s something most people don’t realize:
- More than half of women experience a cycle variation of 5 days or more
- Nearly 7 in 10 women experience a cycle variation of up to 6 days
- Almost half of women experience a cycle variation of 7 days or more
- Fewer than 1 in 2 women have a single LH surge
- LH surge levels range enormously between individuals, from 6.5 mIU/mL to 101 mIU/mL (As per Inito’s internal study, about 32% cycles have LH levels up to 7 mIU/mL, which have triggered ovulation confirmed by a subsequent rise in PdG in these cycles.)
Yet most tools rely on fixed thresholds and averages.
Inito doesn’t.
It tracks your hormone patterns with precision, using changes relative to your own baseline, not a generalized rule. So your results reflect your cycle, your hormone patterns—not an average.
FAQs
Inito is an at-home hormone monitor. It measures four key fertility hormones in urine – Estrogen, LH, PdG, and FSH – with precision. It’s able to track your 6-day fertile window and confirm ovulation by measuring these four fertility hormones, unlike predictors that make assumptions based on a single result.
Typically, once a day, and testing the first morning urine works best. The Inito app will remind you which days to test on, based on your unique cycle. Testing usually begins on cycle day six to establish your hormone baseline.
First morning urine is recommended because it contains your highest hormone concentrations, and this reduces the chance of a missed or faint reading. The Inito app guides you on timing.
Yes. Data-rich AI interprets multi-surge patterns and helps distinguish genuine ovulatory events from hormonal ‘noise’. This is particularly beneficial for women with PCOS and irregular cycles.
Yes. The InSight Wireless Reader™ is compatible with both iOS and Android devices.
No. While Inito is a hormone-tracking tool, it’s not designed to diagnose, track, treat, or manage medical conditions. It provides lab-grade hormone trends at home and charts you can share with your doctor, thanks to a PDF export, but it is not a substitute for clinical testing or medical care.
Disclaimers: 1 – Accuracy may be reduced in irregular cycles, anovulatory cycles, or when hormone levels are affected by medical conditions, medications, or inconsistent testing. “95% accuracy to corresponding blood hormone trends” refers to published findings showing that Inito’s urinary hormone measurements closely matched the direction and pattern of corresponding serum hormone changes over time. It does not mean urine values are identical to blood values or that absolute urine and blood hormone numbers will match exactly.
