Frequently Asked Questions
Which date must I use/enter to calculate the leaps?
Last Updated 7 months ago
To calculate the leaps you have to enter the due date. Also with preemies and twins. The timing of the mental development of a baby is linked to the age since conception and not to the age since birth. Therefore, to know when your baby is making a leap, you have to fill in the due date, and not the date of birth. Look at it this way: the brain of a baby that is born three weeks early is not as far developed as the brain of a full term baby. The brain develops, in and outside the womb. This is why we calculate with the due date.