Clearblue Fertility Monitor Review

If you’re trying for a baby chances are your hoping to fall pregnant on your first try. Getting a negative pregnancy test month after month can be downright devastating. The Clearblue Fertility monitorclaims to almost double your chances of getting pregnant. Here at Stork Mama we wanted to know if it would live up to its promises. We’ve researched and thoroughly tested the Clearblue Fertility Monitor to bring you an honest and unbiased review. Does it work? Let’s find out.

Clearblue Fertility Monitor Review

The Clearblue fertility monitor is basically a more advanced way of analyzing ovulation sticks. You pee on the stick and let the machine do its thing. It will analyze the levels of two hormones in your urine: lutenising hormone (LH) and estrogen. If you listened in biology class you’ll already know these hormones will rise when you ovulate. The higher the levels the more fertile you are. This machine will tell you’re your 6 most fertile days in your cycle.

This machine is recommend for you if you

  • Are trying to conceive quickly
  • Have been TTC for a long time
  • Have Irregular cycles
  • Work Shifts
  • Are struggling with basal temps or manual sticks

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The fertility monitor was tested over the period of 3 cycle for accuracy. The first two months were used as ‘dry runs’ and the third as a pregnancy attempt. Our test mama was well in tune with her cycle which was 30 days long with ovulation around day 19. The  result were:

Cycle 1 – Peak Day 20
Cycle 2 – Peak day 19
Cycle 3 – Peak Day 20

On the first cycle you need to provide test sticks from day 6. This helps the monitor pinpoint your hormone surge. Unfortunately it also mean using a lot of sticks if you ovulate late in your cycle. After the first cycle it will adjust to request tests between days 6-9.

On the third cycle our tested had sex on the 3 days indicated as high and peak ovulation times. That cycle resulted in a positive pregnancy test. In comparison with basal temperature testing the monitor was able to indicate the period of fertility before ovulation. It also gave a better insight into how fertile you were compared to reading an ovulation stick fertility monitor

Ease of Use

At first the machine appear to be very confusing to use. It does have a bit of a learning curve compared to eyeballing an ovulation stick. We then realized it’s actually fairly simple to operate. There are very few buttons to press other than an on-off switch and a cycle reset.

You press the pink button to set the first day cycle (bleeding). The machine will then count your cycle days. Between day 6-9 it will be ask you to begin testing your urine until your ovulation is detected.

Just like an ovulation stick you dip the cassette in a urine sample and place the tip into the test slot of the machine. After 5 minutes the stick need to be removed and will display your results. These are displayed as low fertility, high fertility or peak fertility days. The best days to conceive are on your high and peak fertility days. If you period arrives, reset and repeat for the next cycle.

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Your cycle needs to be set on day 1-4 otherwise you need to wait until your next cycle. Starting after this will skew results as the machine keeps a memory of each cycle.

Whenever a new cycle is started it set a 6 hour window for you to perform a urine test. This should ideally be over your normal waking time. Your first urine will have the highest levels of hormones. The 6 hour window gives you a little more flexibility than basal temperature checking. This is important especially if you are a shift worker who does nights. Although it’s probably best to reduce your fluid amounts overnight to prevent urine dilution.

The monitor needs checked every day during this time to see if you need to perform a test that day or not. Luckily if you are forgetful the machine has an alarm option to remind you. The alarm will only go off during the test window on day you need to test.

We love that the monitor can store up to 6 cycles. This is very useful if you decide to see a medical professional about your fertility.


This machine is quite an investment. The actual machine is just shy of $200. You will need to buy at least 10 test sticks for each cycle. Some women may even require 20 sticks depending on your cycle length. The sticks come in packs of 30 and will cost around $40. This will last around 2-3 cycles of use depending on how many test are required each month.

For power the monitor requires two AA batteries. We recommend buying rechargeable batteries to keep down the running costs.

clearblue fertility monitor review

Any Issues?

Although it didn’t happen to our tester it appear there are time when the monitor doesn’t detect a peak surge. There are a few reason this may happen including

  • Forgetting to test
  • Incorrect use of monitor
  • No ovulation that month (rare)
  • Surge of LH hormone lower than 40 mIU/ml sensitivity.

This can be frustrating, but the machine should be able to detect your high days. Having sex right over this period will ensure you catch your most fertile time.
This machine also isn’t suitable for everyone to use including:

  • Menopause symptoms
  • PCOS
  • Endocrine disorder
  • Impaired Liver or kidney function
  • Hormonal treatments (including fertility drugs or hormone contraction)
  • Recent pregnancy
  • Breastfeeding
  • Some antibiotics



If you are currently not using any method to detect ovulation you will more than likely get good results with this monitor. It’s also a great option if you are struggling to interpret your cycle using temperature or ovulation sticks. This will tell you exactly the best day to try for a baby. Pinpointing your ovulation day is the best way to increase your chances of getting pregnant.

If you’re relaxed about how long it takes to conceive, or prefer an inexpensive method then this machine isn’t for you. We do highly recommend at least using ovulation sticks or charting your temperatures, or both.

More Reviews

The Clearblue Fertility monitor has over 130 reviews on Amazon. Click here for more reviews and get an idea of what other moms think of this machine.

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