About DuoFertility

"Far more accurate than any current system and could save the NHS - and individual couples - a fortune on unnecessary fertility treatment."

DuoFertility is a non-invasive, easy-to-use female fertility monitor. It is the most natural, convenient, and precise way of maximising your chances of getting pregnant. The DuoFertility fertility monitor takes the stress out of trying to conceive, and restores the magic to what should be one of the most natural things in the world.

The DuoFertility fertility monitor consists of a hand-held reader and a sensor, roughly the size of a £1 coin, which is worn continuously underneath your arm. It uses the well-established BBT measurement method to identify when you are ovulating with 99% accuracy. It uses this information to predict the days in the month when you are most likely to be fertile up to 6 days in advance. It displays this information on your reader in an easy-to-read format, giving you plenty of time to plan intercourse for when you are most likely to get pregnant.

We understand how difficult it can be to discuss your fertility issues with your GP, so buying DuoFertility also gives you access to an in-house team of world-class fertility experts. They will be happy to answer any questions that you may have about your fertility, and will also help you to interpret your cycles, if you so wish.  

• Accurate

  The DuoFertility fertility monitor has been described in the Daily Mail as being ‘far more accurate than any current system’. The BBT measurement method used by DuoFertility has been scientifically proven to identify your most fertile days with 99% accuracy. It is the only method that has been scientifically proven to confirm ovulation.

  Unlike manual BBT measurements which are prone to human error, DuoFertility measures your temperature automatically throughout the day and night, eliminating the potential for error. Unlike traditional BBT thermometers, DuoFertility’s measurements are not affected by outside factors such as interrupted sleep patterns, stress, or alcohol consumption.

  DuoFertility is the only fertility monitor on the market which allows you to enter in other personal fertility parameters, such as the quality of your cervical mucus or the position of your cervix. Studies have shown that including this additional information increases the accuracy of detecting your fertile days to 99.7%.

• Natural

  DuoFertility is a safe and natural alternative to expensive fertility treatments. It is completely non-invasive and has no associated side effects. Trying to get pregnant no longer has to involve doctors and medication – just you, your partner, and DuoFertility.

• Convenient

  We understand how demoralising it can be to wake up early every day to pee on a stick or take manual temperature measurements. With DuoFertility, there are no manual temperature measurements, no early morning wake-ups, and no peeing on a stick. All you have to do is wear the DuoFertility sensor under your arm and DuoFertility will do the work for you. You can monitor your fertility levels on the hand-held reader wherever and whenever it is most convenient for you. You also have the option of looking at your fertility charts in greater detail on your PC.

Buy DuoFertility

DuoFertility should not be used as a contraceptive device. DuoFertility was designed as a fertility monitor and should not be used for any other purpose. If you wish to learn more about natural family planning, you should see a natural family planning expert who will be able to help you identify your natural cycle.

Read more about why you should buy DuoFertility

Find out more about how DuoFertility works

Watch the DuoFertility demonstration video