About the product

OB Datum is a clinician-first pregnancy-dating workspace for iPhone and iPad. Calculate from LMP, conception or ovulation, an established EDD, known gestational age, or IVF embryo transfer, then review the formula and equivalent dates behind every result. Compare dating evidence without silently changing an established due date, explore the pregnancy timeline, and save anonymous calculations locally on your device.

No accounts, advertising, analytics, or tracking. Pregnancy dates and saved cases are never uploaded or synchronized through iCloud.