Ovulation Tracking Methods Compared
Timing is everything when you’re trying to conceive. You have roughly a 12-24 hour window each cycle when an egg can be fertilized — miss it, and you’re waiting another month. That’s why ovulation tracking is the single most important habit you can build when TTC.
But with so many methods out there, which one actually works? Here’s an honest breakdown of every major tracking method — what it costs, how reliable it is, and who it’s best for.
1. Ovulation predictor kits (OPKs)
OPKs detect the surge of luteinizing hormone (LH) that happens 12-36 hours before ovulation. They’re the most popular tracking method for a reason: they’re cheap, easy, and give you a clear positive or negative.
Best for: Everyone — this should be your baseline tracking method.
Accuracy: ~97% at detecting the LH surge (though timing of ovulation after the surge varies).
Our pick: Easy@Home Ovulation Test Strips — you get 50 strips for around $15, which gives you several months of testing. They pair with the Premom app for easy line-reading.
For a premium option, the Clearblue Advanced Digital measures both estrogen and LH to give you a wider fertile window (typically 4 days vs. 2). It costs more but takes the guesswork out of reading lines.
2. Basal body temperature (BBT) tracking
Your basal body temperature rises 0.2-0.5°F after ovulation due to progesterone. By tracking this daily, you can confirm that ovulation happened — though it can’t predict it in advance (it only confirms after the fact).
Best for: Women who want to confirm ovulation is actually occurring and identify patterns over multiple cycles.
Accuracy: Highly accurate for confirming ovulation occurred, but not useful for real-time prediction.
Our pick: The Easy@Home Smart Basal Thermometer reads to 1/100th of a degree and syncs with an app to chart automatically. A regular thermometer works too, but the digital precision matters here.
3. Wearable fertility trackers
Wearables like Tempdrop and the Ava bracelet track your temperature continuously while you sleep, removing the need to take your temp at the exact same time every morning. They use algorithms to predict your fertile window.
Best for: Women with irregular sleep schedules, shift workers, or anyone who can’t reliably take BBT at the same time daily.
Accuracy: Good for pattern detection over time, though the first 1-2 cycles are a learning period.
Our pick: Tempdrop — it’s worn on your upper arm overnight and learns your unique temperature patterns. The algorithm improves over time and retroactively adjusts your data. It’s become the gold standard in the TTC community for wearable tracking.
4. Cervical mucus monitoring
Your cervical mucus changes throughout your cycle — becoming clear, stretchy, and egg-white-like as you approach ovulation. This “egg white cervical mucus” (EWCM) is a sign that your body is creating the ideal environment for sperm.
Best for: A free, no-equipment-needed method to layer on top of OPKs or BBT.
Accuracy: Subjective but useful as a confirming signal alongside other methods.
Cost: Free!
5. Fertility apps
Apps like Premom, Fertility Friend, and Flo use your data (OPK results, BBT, symptoms) to predict your fertile window. They’re not standalone methods — they’re tools for organizing the data from other tracking methods.
Best for: Everyone — pair with your chosen tracking method.
Our picks: Premom (best if you use Easy@Home OPKs — the camera reads your strips) or Fertility Friend (best for BBT charting with the most sophisticated algorithm).
What we recommend
For most women TTC, here’s the ideal combo:
- Easy@Home OPK strips (start testing around cycle day 10)
- A BBT thermometer or Tempdrop (to confirm ovulation actually happened)
- Track in an app (Premom or Fertility Friend)
- Pay attention to cervical mucus (free bonus data)
This layered approach gives you both prediction AND confirmation, which is far more reliable than any single method alone.
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