Lady-Comp Fertility Tracker

Natural family planning made easy!

Lady-Comp is an intelligent fertility tracker that reads your basal body temperature each morning, predicts your ovulation, and shows you your fertile days right on the device, so you can time conception with confidence.

Its algorithm has been refined since 1986, works completely hormone-free, and needs no app, no subscription, and no cloud. Everything stays on the device.

The handheld fertility tracker predicts your ovulation up to 6 days in advance and supports you with many more features on your journey to conceive, whenever you are ready.

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Ready, Set, Go - Reliable insights in just 60 seconds

This is how easy cycle tracking is with Lady-Comp:

1
After waking up, measure your basal temperature under your tongue.
2
Enter when you have your menstruation.
3
Lady-Comp displays if you are fertile or not.
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How does the Lady-Comp fertility tracker work?

Lady-Comp is simple to use. Measure your basal body temperature under your tongue for about 60 seconds every morning after waking up, and the fertility tracker shows you immediately which phase of your cycle you are in and whether you are fertile today.

  • Red display = fertile/possibly fertile
  • Red display + cycle day flashing = Today is your predicted ovulation.
  • Green display = not fertile
  • Yellow display = learning phase/cycle fluctuation
  • Light blue display = possible pregnancy
  • Blue display = probable pregnancy
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Ovulation causes a small rise in your basal body temperature. Lady-Comp detects that shift, learns your individual pattern, and pinpoints the days you are most likely to conceive.

 

The digital alternative for natural family planning

Lady-Comp uses the Fertility Tracker Method (FTM) to determine precisely which phase of your cycle you are in and when your fertile window opens. Its intelligent algorithm is built on more than 40 years of research and over 10 million evaluated cycles, and it identifies your fertile window and predicts ovulation in under a minute, without charting curves or filling in paper diaries.

The algorithm correctly identifies your non-fertile days with 99.4% accuracy, validated across 107,000 cycles from 5,328 women over ten years (van de Roemer 2021).

The best part: Lady-Comp works 100% hormone-free and adapts even to irregular cycles and natural fluctuations. All your data stays on the device. Lady-Comp needs no app and no cloud.

Lady-Comp is FDA-cleared to predict ovulation and identify the days you are most likely to conceive (510(k) K050094).