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The Best Ovulation Calculator

When you’re trying to get pregnant, one of the most important things you can do is identify when you ovulate each month. It’s ovulation that determines your fertile window: those few days each month where you can actually conceive.

Conception can only occur when a sperm meets a fertile egg, and given the relative lifespan of each, you only have five to six days in each cycle when you could get pregnant if you’re trying. Four to five days before ovulation and only as much as one day afterwards. After that, the egg released by the ovaries is no longer fertile, and the sperm in your body can’t endure any longer and die.

If you’re going to get pregnant when you want to, you need to know when you ovulate. It’s even more important if your menstrual cycle is notably long, irregular or disrupted by conditions like PCOS that can affect fertility, as rarer ovulation makes each occasion more important.

There are plenty of different systems, products, apps and website that promise to calculate and predict your ovulation, but you need to know which is the best.

How Do They Work?

Online and app-based ovulation calculators work by taking a couple of key bits of information, plugging them into a database of statistics about how lots of people experience menstrual cycles, identify where you are in your cycle and giving an estimation of when you’re likely to next menstruate.

All they need to give you a prediction is the date you started your most recent period and the length of your cycle, so if you don’t know those key facts you might need to do some counting to establish your cycle length and make sure you’re keeping a note of when your period starts.

This allows the calculator to place where you are in your cycle, and tell you when you’re likely to ovulate based on when people with a similar cycle length to you ovulate, statistically speaking.

The Best Choice

Unfortunately, even one with the best statistics backing up an ovulation calendar, their use is limited. If your cycle is disrupted, or irregular for any reason, be it as simple as stress, or as complex as Polycystic Ovary Syndrome, then its predictive power declines to almost nothing. It’s ‘off the shelf’ statistics can’t adapt to your specific needs.

OvuSense measures your basal body temperature, to provide answers that are both more accurate and tailored to your body. This core minimum temperature changes subtly to signal immediately before you ovulate and when you’ve just ovulated, so OvuSense learns what your average is, to calculate a result specifically for you!