One major factor (amongst other factors) that determines the sex of the baby is the timing of the intercourse relative to the ovulation day.

The Male Sperm cell is either X or Y; That is, "X-chromosome-bearing sperm" or "Y-chromosome-bearing sperm", The Egg cell is always X, that is X-chromosome-bearing.

If an ‘X-sperm cell’ meets the egg cell (X);the baby will be a Girl
If a ‘Y-sperm cell’ meets the egg cell (X); the baby will be a Boy Therefore;

X-Sperm Make Girls,
Y-Sperm Make Boys

Y-sperm cells move fast but die fast
X- Sperm cells move slowly but survive longer.

Therefore if you have intercourse some days before ovulation most of the Y-sperms would have died leaving mostly X-sperms. The chances of having a baby Girl is therefore higher.

To increase the chance of a baby Boy, intercourse must be timed to coincide with ovulation. The role of PREDICTE is to tell you exactly when Ovulation will occur.

When you get a positive PREDICTE Result, Ovulation will occur in the next 24-36hrs. You can therefore time intercourse to increase the CHANCE of achieving the desired SEX.

X and Y Crossing

XY or XX



Largest cell in the body
~100 microns

Smallest cell in the body
~5 microns, 55 microns with tail

A woman is born with
a lifetime supply of eggs

A man makes sperm every
day of his life from puberty

One egg is released
per cycle (usually)

20 to 150+ million sperm are
in each ejaculate

The egg can live about
24 hours after ovulation

Sperm can live up to 5 days
under ideal conditions

(Cannot move by itself)

Moves by thrashing it's whip like tail
The only human cell with a flagellum

Has 23 chromosomes, the baby's genetic heritage from its mother

Has corresponding 23 chromosomes, the baby's genetic heritage from its father

The egg's 23rd chromosome
is always an X

A sperm's 23rd chromosome
is either an X or a Y

Ovulation ~ The Emergence of an Egg

During your fertile years, each cycle an egg is released from an ovary during ovulation. An ovary is about the size of a walnut, and you have two, one on each side of your uterus.
When you were born, your ovaries already contained a lifetime supply of eggs. You needn't worry about running out of eggs; your ovaries contained about a million eggs at birth, and though that number dwindles to a few hundred thousand viable eggs remaining by puberty, only around 400 to 500 eggs are actually ovulated during the years between puberty and menopause.
Properly speaking, the correct term for any unfertilized egg is oocyte, pronounced like oh-oh-cyte.
At the right time during your cycle, the ovaries receive a hormonal message that menstruation from the previous cycle has ended, and it's time to begin preparing an egg for ovulation. Inside the ovaries, each egg is encased in its own envelope of cells called a follicle. A number of follicles begin to grow larger, and nurse cells are formed within the follicles to nurture the egg. At some point, one follicle is somehow selected as the dominant follicle, and it continues to grow and mature, while the others are simply reabsorbed.
No one is sure exactly how the dominant follicle is selected, but it seems to be a combination of follicle size and hormone level within the follicle. On some occasions, more than one follicle matures, and fraternal twins can result. Fertility drugs can be used to cause many follicles to mature.
But the normal situation is that only a single follicle, on one of the ovaries, matures. It was once thought that the ovaries took turns releasing the egg, but it's now believed that whether the right or left ovary releases the egg each cycle is fairly random.
Over several days, the follicle continues to grow until it is nearly golf-ball-sized. A mature follicle can be felt during a pelvic exam, and is visible by a vaginal ultrasound. At last, the follicle and the ovary wall burst open, releasing the egg. The egg is quickly rescued from tumbling into the pelvic cavity by the fimbria, fingerlike projections at the end of the fallopian tube. The fimbria draw the egg into the waiting fallopian tube, and it is here that the egg waits to be fertilized by sperm.
But the egg's hours are numbered. After literally waiting a lifetime for this moment, the oocyte can survive only 24 hours after ovulation. (In fact recent studies show that the oocyte is only fertilizable for 12 hours only). This is why it is so critical to detect when ovulation occurs (using PREDICTE), if you are trying to conceive and even more importantly if you are trying to select your baby’s sex..

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