The best fertility monitors and trackers, from Inito and Mira to plain strips (2026)

The short version.

Fertility trackers come in three types. Hormone monitors read several hormones from urine and turn them into a chart. Strips read one hormone at a time and leave the interpretation to you. Basal body temperature tracking confirms ovulation after the fact. A monitor earns its keep when cycles are irregular, when LH strips have never made sense to you, or when you want proof that ovulation is happening. If your cycles are regular and strips work, you may not need one. Our best ovulation tests covers the strip end of the market in more depth; this page focuses on monitors and on when to step up.

How we chose.

We did not use these products and make no claims about results in anyone's hands. We ranked them on:

• Which hormones they read: LH, estrogen as E3G, PdG and FSH.
• How results are shown: numbers in an app, a monitor screen, or lines you judge.
• What the brand states, including hormones measured, fertile days identified and accuracy figures, from the brand's own site or Amazon listing. We report those claims as claims.
• Effort and ongoing supplies per cycle, in strips, wands and sticks rather than dollars, since we never quote prices.
• FDA, ACOG and NICHD guidance on what home tests can and cannot tell you.

Every product is a real Amazon listing matched by ASIN.

The picks, one by one.

Inito Fertility Monitor, best overall.

The Inito monitor clips onto your phone and reads one test strip for four hormones: estrogen, LH, PdG and FSH. You get values and a cycle chart rather than a yes or no. Inito says it identifies six fertile days and confirms ovulation with PdG, and it promotes support for PCOS and irregular cycles. The starter box includes 15 strips, and the app tells you which days to test, so refills are the recurring cost. It needs your phone at every test. It is the most complete single strip reader on Amazon, which is why it also appears in our ovulation test ranking.

Mira Fertility Max Kit, best standalone analyzer.

The Mira Max kit pairs a small handheld analyzer with Max wands, which Mira says read LH, E3G and PdG. Mira uses fluorescent labeling, which it describes as the same approach used in labs, and sends the values to its app. Mira also sells Ovum wands for FSH and Ultra4 wands for all four hormones. It describes its devices as FDA registered and says results are not intended to diagnose PCOS or any other condition. Choose Mira if you prefer a dedicated reader to a phone camera. Wands are an ongoing purchase.

Clearblue Fertility Monitor, best without an app.

The Clearblue Fertility Monitor is the old reliable touch screen device. Clearblue says it tracks estrogen and LH, shows Low, High or Peak fertility, and typically identifies up to 6 fertile days each cycle. It reports 99 percent accuracy at detecting the LH surge in laboratory testing. Clearblue says most women need 10 test sticks a cycle, and 20 if cycles are irregular or longer than 35 days. It does not read PdG, so it cannot confirm that ovulation happened. Its strength is simplicity: no phone, no account, results on the device.

Proov Complete Fertility Test Kit, best four hormone strips.

The Proov Complete kit covers FSH, LH, estrogen and progesterone, as PdG, in one cycle kit of 20 tests, read with the Proov app. You do not buy a device. Proov says its PdG tests are FDA cleared and turn positive at 5 mcg/mL, taken on days 7 to 10 after peak fertility. The trade off is organization: several test types on different days, and a new kit each cycle.

easy@Home Ovulation Test Strips, best budget LH strips.

easy@Home LH strips come 50 to a pack, and the Premom app photographs and lines them up so the surge is visible. They predict ovulation; they do not confirm it. This is the same pick that leads our ovulation test ranking, included here because it is the honest baseline against which any monitor should be judged.

easy@Home PdG Test Strips, best budget ovulation check.

easy@Home PdG strips read PdG, the urine breakdown product of progesterone, which rises after ovulation. Paired with LH strips, they answer the one question LH cannot: did ovulation follow the surge. Ten strips cover several days of checking after your peak. You read lines, not numbers.

easy@Home Digital Basal Body Thermometer, best for temperature charting.

The easy@Home basal thermometer reads to 1/100th of a degree, stores 30 readings and logs to the Premom app, per the listing. Take your temperature at the same time each morning before getting up. ACOG says BBT rises about 0.5 to 1 degree Fahrenheit around ovulation and stays up until your period, and that the most fertile days are the 2 to 3 days before that rise. It confirms ovulation after the fact, so it works best alongside LH strips. No refills.

Fertility monitors compared.

Tracker	Hormones or signal	How results show	Confirms ovulation	Ongoing supplies
Inito	E3G, LH, PdG, FSH	Numbers in a phone app	Yes, PdG	Strips
Mira Max	E3G, LH, PdG	Numbers via analyzer and app	Yes, PdG	Wands
Clearblue Fertility Monitor	E3G, LH	Low, High, Peak on screen	No	Test sticks, about 10 a cycle per Clearblue
Proov Complete	FSH, LH, E3G, PdG	Lines read by app	Yes, PdG	One kit per cycle
easy@Home LH strips	LH	Lines, app photo	No	Strips
easy@Home PdG strips	PdG	Lines	Yes	Strips
easy@Home BBT thermometer	Temperature	Chart in app	Yes, after the fact	None

Hormone monitors vs strips vs BBT.

Strips are the cheapest per test and do one thing well. LH strips predict ovulation; PdG strips confirm it. You judge the line, and with LH you need several days of tests to see the surge build.

Hormone monitors read the same urine, but they quantify more than one hormone at once and keep the history. That matters most when cycles vary month to month, because the monitor sets a personal baseline rather than a fixed cutoff. The cost is upfront hardware and ongoing strips or wands.

Basal body temperature costs one thermometer and no refills, but it lags. ACOG says BBT shows only when ovulation has already occurred and is unreliable during a fever. It is a confirmation tool and a way to learn your pattern across cycles.

Many people combine them: LH strips to time sex, plus PdG strips or BBT to confirm.

LH, E3G, PdG and FSH, explained.

LH. Luteinizing hormone surges just before ovulation; the FDA says about 1 to 1.5 days before. The surge day and the next are usually the most fertile.

E3G. The urine breakdown product of estrogen. The FDA says it builds up around ovulation and thins cervical mucus. Rising E3G flags fertile days before the LH surge, which is why estrogen reading monitors show a wider window.

PdG. The urine breakdown product of progesterone, made after the egg is released. A sustained PdG rise in the days after peak fertility suggests ovulation happened. It is the main thing monitors add over LH strips.

FSH. Follicle stimulating hormone helps an egg mature. Inito, Mira Ovum and Ultra4 wands, and Proov Complete read it. An unusual FSH result is something to take to a clinician, not to interpret alone.

Accuracy claims, as the brands state them.

There is no independent head to head test of these monitors that we could find, so treat accuracy claims as marketing until proven otherwise. What each brand says: Clearblue reports 99 percent accuracy at detecting the LH surge in laboratory testing. Inito says it gives the most precise fertility hormone readings and outperforms competitors in its own lab testing. Mira says its fluorescence method measures hormones with high precision. Proov says its PdG tests are FDA cleared. The FDA's own figure for careful home LH and E3G testing is about 9 times out of 10, and it notes that testing at the wrong point in the cycle makes any test unreliable. The device matters less than testing on the right days, at a consistent time, as the leaflet says.

Cost per cycle.

We do not quote prices, but the structure is worth knowing. Strips are the lowest cost per cycle. Monitors add a one time device and then strips or wands each cycle; long or irregular cycles use more of them, which Clearblue spells out as 20 sticks instead of 10. Proov Complete is bought a cycle at a time. A basal thermometer is a single purchase. If budget matters, start with LH strips, add PdG strips or a thermometer, and step up to a monitor only if those leave questions open.

PCOS and irregular cycles.

NICHD says PCOS is diagnosed from two or more features: absent ovulation with light or skipped periods, high androgen levels, and follicle growths on the ovaries. Irregular ovulation, and LH that can run high, mean LH only tests may read positive often or never show a clean surge. Monitors that read estrogen and PdG give more context, and several brands market themselves for PCOS, but Mira states plainly that its results are not intended to diagnose PCOS or any condition. Perimenopause can also produce confusing readings. If tests never make sense across a few cycles, that pattern is itself useful information to bring to a clinician.

Trying to conceive, the rest of the checklist.

When the time comes, our best pregnancy tests ranks early tests on sensitivity, and best prenatal vitamins compares folic acid labels. If you use lube while trying, keep it simple and skip spermicides, warming agents and heavy fragrance; see lube ingredients to avoid and ph balanced lube. Discharge changes through the cycle line up with what these monitors measure; vaginal discharge explains the pattern.

When to see a clinician.

ACOG recommends a fertility evaluation after 1 year of regular sex without birth control, after 6 months if you are over 35, and right away if you are over 40. See a clinician sooner if periods are very irregular or absent, if LH never surges or PdG never rises across several cycles, if your monitor flags unusual FSH, or if you have pelvic pain, very heavy periods or a known condition such as PCOS or endometriosis. This page is general information, not medical advice.