Out of 249+ pregnancy calculator apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
Compare top Pregnancy Calculator Apps (September 2026)
This app helps healthcare practitioners and pregnant women track pregnancy progress. It calculates gestational age, estimated due dates, and fetal weight using various formulas. It also offers helpful tips and recommendations for diet, exercise, and antenatal care.
This medical app helps healthcare professionals quickly calculate pregnancy gestation weeks using last menstrual period dates or ultrasound scan data. It provides pregnancy progress information and is designed for busy medical staff.
Track your pregnancy week-by-week with expert advice, daily articles, and interactive 3D models of your baby's development. Features include a due date calculator, kick counter, and tools to plan for labor and organize appointments. Join millions of expecting parents worldwide.
Are there free pregnancy calculator apps for iPhone?
Yes — 20 of the top pregnancy calculator apps we rank are free to download, including Pregnancy Calculators Pro and FAST Pregnancy Calculator.
Does Pregnancy Calculators Pro have ads or in-app purchases?
Pregnancy Calculators Pro shows ads and has no in-app purchases, according to its App Store listing as of September 2026.
How many pregnancy calculator apps are on the App Store?
We track 249+ pregnancy calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
How does Pregnancy Calculators Pro calculate the estimated due date?
Pregnancy Calculators Pro calculates the estimated date of delivery (EDD) or due date based on your last menstrual period (LMP). It can also use ultrasonography (USG) biometrics like crown-rump length (CRL), biparietal diameter (BPD), and femur length (FL) for more precise calculations.
What formulas does Pregnancy Calculators Pro use for calculations?
The app uses commonly used formulas for precise pregnancy parameter calculations. For fetal weight estimation, it utilizes the Hadlock or Shepard formulas.