Inito
At-home fertility hormone monitor tracking LH, FSH, PdG, and E3G — helps PCOS women identify true ovulation. iOS & Android.
- Developer
- Inito Health, Inc.
- iOS Rating
- 4.9 (3.1 reviews)
- Android Rating
- 4.1 (21 reviews)
- Downloads
- 1K+
- Pricing
- Hardware+App
- Price
- Free app; reader $129-$189 + strips
- PCOS-Specific
- Yes
- Free Tier
- Yes
- Last Updated
- Feb 2026
Inito is the only at-home fertility monitor that simultaneously tracks four key reproductive hormones — LH (luteinizing hormone), FSH (follicle-stimulating hormone), PdG (a progesterone metabolite), and E3G (an estrogen metabolite) — giving women with PCOS an unprecedented window into their actual hormonal cycle. For women using inito for PCOS fertility tracking, the difference versus standard ovulation predictor kits is significant: instead of a binary positive or negative, Inito shows you a quantitative hormone curve across your entire cycle.
Why It Helps With PCOS
Standard ovulation predictor kits (OPKs) fail PCOS women at an alarming rate. Because PCOS causes chronically elevated LH levels and frequently produces multiple LH surges without actual ovulation, standard OPKs can give false positives — showing a 'peak' when no egg is released. Inito solves this by tracking PdG, the only way to confirm ovulation actually happened. If LH rises but PdG never follows, Inito shows you the anovulatory cycle clearly.
The FSH measurement is equally valuable. An LH:FSH ratio greater than 2:1 is considered a clinical marker for PCOS diagnosis. Inito gives you this data at home, which you can share directly with a reproductive endocrinologist or PCOS specialist.
How to Use Inito for PCOS
- Start testing early — PCOS cycles are unpredictable. Begin testing on day 6–8 of your cycle (or earlier if your cycles are very short) to avoid missing an early LH surge.
- Test every day through mid-cycle — Use first morning urine for consistent hormone concentration. Test until you've confirmed ovulation via a PdG rise, or confirmed anovulation by cycle end.
- Look for LH peaks without PdG follow-through — This is the PCOS fingerprint. Multiple LH spikes with no subsequent PdG rise = anovulatory cycle. Inito makes this pattern visible.
- Review your FSH:LH ratio — In the Inito app, compare your FSH and LH readings in the first half of the cycle. Consistently elevated LH relative to FSH is a PCOS marker worth discussing with your doctor.
- Share your hormone chart with your specialist — The Inito app generates a chart you can export. Bring this to your PCOS consultation or reproductive endocrinologist — it's more useful than a verbal description.
- Use on medicated cycles — If you're taking Clomid, Letrozole, or other ovulation-induction medications, Inito can confirm whether the medication triggered ovulation by showing the expected PdG rise.
Key Features for PCOS
- Tracks 4 hormones — LH, FSH, E3G, and PdG simultaneously (unique in the consumer market)
- Quantitative readings — Shows actual hormone levels, not just positive/negative
- PdG confirmation — The only home test that confirms ovulation actually occurred
- Full-cycle hormone chart — visualize your entire hormonal cycle in one graph
- FSH:LH ratio tracking — PCOS-relevant diagnostic data at home
- App-based insights — personalized fertile window estimates based on your actual data
- Fertility mode + natural family planning mode — covers TTC and cycle tracking
- Works with iOS & Android
How It Compares
Mira also tracks quantitative LH and estrogen and is a strong competitor. Mira has a lower per-test cost and a well-designed app. However, Inito's exclusive advantage is PdG measurement — the progesterone confirmation that actually tells you whether ovulation occurred. For PCOS women, that distinction is the entire value proposition. If you only care about identifying the LH surge window, Mira is excellent. If you want to confirm ovulation actually happened (which is the core PCOS fertility challenge), Inito is the better choice.
Getting Started
The Inito monitor retails for approximately $169 and includes an initial supply of test strips. Replacement strips cost approximately $49 for 15 tests. Available in the US, UK, Canada, and Australia. Order at inito.com. Connect the monitor to your smartphone via the Inito app, and begin your first cycle on day 6.



