The Wheel SP

The Wheel SP (for SPinner) is a gestational age calculator (also known as a pregnancy wheel) that is used every day by doctors, obstetricians, midwives, nurses, and pregnant women. The Wheel SP is a professional tool that replaces those worn-out cardboard wheels with no compromises in its functionality or utility.

The Wheel SP accurately determines the estimated delivery date (EDD), or due date, of a pregnancy based on the first day of a womans last menstrual period (LMP), or from a known gestational age (GA) on a known date, e.g. from an ultrasound measurement or an implantation procedure.

However, in its primary day-to-day role for healthcare providers, when the EDD is already known, The Wheel SP enables the precise calculation of the gestational age of a fetus at anytime during pregnancy in LARGE, easy-to-read characters.

The Wheel SP also remembers the last EDD that was entered to display the GA even faster for those who are following just one pregnancy.

Although The Wheel SP offers a simple, spinner-based interface, without any compromise in its usefulness to professionals, some may prefer a more robust user-interface that displays actual calendars (along with the dates of full moons). This more familiar look (like the iPhone Calendar application) can be found in the original The Wheel (also offered at the AppStore).