Wow, so easy to use! The Lady-Comp has a bit more of a retro feel, but very user-friendly, no need to sync to an app. Definitely a great option if you want a stand-alone device.
This is a great device to either prevent or plan pregnancy. Works great and super easy to use. It's very accurate and have been using it for a few months so far without any issues. Recommend it.
Best birth control I’ve ever used!!! Despite the initial investment, its accuracy is amazing. After only a couple months, it now can tell me exactly when my period is coming, and my cycle is very irregular. I highly recommend this product!!!!
Everything in one compact device
Here’s why hundreds of thousands of women love Lady-Comp
“A must-have”
...and more reviews from happy Lady-Compers
“I've been using the Lady Comp for the last 11 years (yes, 11). It has a great little tune as an alarm (some people might think it is too soft, but I think it is great), and so far it has been super precise. I can tell exactly the day my period is coming (by the temperature drop) and when I am most probably ovulating. Even when my period is not that exact (might vary from 27 to 30 days), the lady comp works super well. I would definitely recommend it and I will definitely get another one once mine doesn't work any more.
Have been using this for about 5 months and it is life changing! For someone that doesn’t have many options for birth control pills (I have factor 5) I thought I had no other choice until I found this. I feel like myself again because I’m not taking horrible pills that make me crazy. I love this thing and would recommend it to any girl out there! The price may be a bit high, but the amount of times you’re going to use this thing and the benefit it gives you is completely worth it.
Easy to use and very helpful to have. It is very expensive to first buy however cheap to maintain compared to ClearBlue machines or other fertility monitors.
I have had mine about four years and it has done the job it is supposed to do. We practice NFP and it has allowed us to get pregnant when we want and avoid pregnancy when we are not ready.
Love love love!!!!! I have typical cycle that ranges from 36 to 42 days and this device predicted ovulation accurately. I have had 2 planned pregnancies with Lady-Comp and also use it to prevent getting pregnant which has worked for me.
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We provide comprehensive lifetime support, including in-depth menstrual cycle data analysis, via phone and email.
Got a period? You can use Lady-Comp.
All Valley Electronics devices work for…
See how our cycle trackers stack up
| Lady-Comp | Daysy | Other period trackers |
|---|---|---|
| 99.4% accurate | 99.4% accurate | 93% accurate |
| No app needed | Works without an app | Needs both a thermometer and app |
| One-time purchase, no hidden costs (payment plans available!) | One-time purchase, no hidden costs (payment plans available!) | $9.99+ monthly subscription |
| Works offline | Bluetooth only on demand | Needs wifi to display fertility status |
| Reliable algorithm that works with irregular cycles | Reliable algorithm that works with irregular cycles | Algorithm uses AI to fill in the gaps |
| Long battery life | Long battery life | Needs phone charger |
| Backlit display | Lights up with fertility status | No backlit display |
| Sensitive sensor that measures to the hundredth of a degree | Sensitive sensor that measures to the hundredth of a degree | Sensor only measures to the tenth of a degree |
| Detects hormonal deficiencies | - | - |
| Shows expected delivery date | - | - |
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Hear from more happy Lady-Compers
My wife and I love this product! Easy to use and accurate. Highly recommend!
Love this little gem. It is pretty pricey, but it accurately measures my temp and helps me chart! It also knows exactly when my new cycle is set to begin. You can also set it like a little alarm clock to remind you to use it every morning.
Lady-Comp works even with irregular cycles – plus more answers to common questions
No. But be sure to use Lady-Comp daily right after you wake up, before you get up and get active. For optimal use of Lady-Comp, we recommend that you have at least 1 hour of continuous sleep before measurement.
It will take approximately 60 seconds to measure.
You can rely on Lady-Comp's results starting the very first day of use. In the beginning, you will see more yellow and red days because they Lady-Comp is still learning your unique cycle rhythms. You will see more green days as the device comes to understand your cycle and can narrow down your fertile window. The more regularly you measure, the better.
You can immediately start with the measurements. If you were using hormonal birth control before, stop using it before you begin measuring. The first bleeding after coming off hormonal birth control is a withdrawal bleeding and must not be entered as your period. If you are menstruating when starting with Lady-Comp and you cannot enter all days, do not enter the current menstruation, but the next one. The first day of menstruation is important because it marks the beginning of your cycle.
Yes, but be sure to use Lady-Comp (or Pearly) daily right after you wake up, before you get up and get active. For optimal use of Lady-Comp, we recommend that you have at least 1 hour of continuous sleep before measurement. If you don't get that during certain nights, there is no reason for concern. Lady-Comp (or Pearly) can handle skipped measurements from time to time.