Best Fast Pregnancy Calculator Apps

250+ iOS apps curated and reviewed

4.3 avg rating
19 free apps
Updated August 2026

FAST Pregnancy Calculator is the household name in fast pregnancy calculator, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Fast Pregnancy Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1FAST Pregnancy CalculatorFAST Pregnancy CalculatorFree4.0★ (5)NoNoAug 2026
2Pregnancy Baby Tracker - WTEPregnancy Baby Tracker - WTEFree4.9★ (379K)YesNoSep 2026
3Pregnancy Guide and CalculatorPregnancy Guide and CalculatorFreeNoNoMay 2026
4Pregnancy Calculator + ToolsPregnancy Calculator + ToolsFreeNoAug 2026
5Calculator‰Calculator‰Free4.9★ (409K)YesNoSep 2026
6Pregnancy App.Pregnancy App.Free4.9★ (23K)YesNoSep 2026
7Pregnancy CalcPregnancy CalcFreeNoNoMay 2026
8Pregnancy Calculators ProPregnancy Calculators ProFreeYesNoMay 2026

Top Picks for Fast Pregnancy Calculator

FAST Pregnancy Calculator#1

FAST Pregnancy Calculator by Onur Ince

For Healthcare Professionals
Editor's Choice
🏥 Medical
4.0(5 ratings)
Free
FAST Pregnancy Calculator screenshot 1
FAST Pregnancy Calculator screenshot 2
FAST Pregnancy Calculator screenshot 3
FAST Pregnancy Calculator screenshot 4
FAST Pregnancy Calculator screenshot 5

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.

Pregnancy Baby Tracker - WTE#2

Pregnancy Baby Tracker - WTE by Everyday Health, Inc.

Track Development & Growth
Strong Contender
🏥 Medical
4.9😊(379K ratings)
FreeAds
#27in Medical
Pregnancy Baby Tracker - WTE screenshot 1
Pregnancy Baby Tracker - WTE screenshot 2
Pregnancy Baby Tracker - WTE screenshot 3
Pregnancy Baby Tracker - WTE screenshot 4
Pregnancy Baby Tracker - WTE screenshot 5
Pregnancy Baby Tracker - WTE screenshot 6

This app guides you through pregnancy and early parenthood with weekly updates, development trackers, and expert advice. It helps you monitor your baby's growth, manage symptoms, and connect with other parents.

What We Love

  • 🚀 Helpful information and videos
  • 👍 Useful for tracking pregnancy and baby's development
  • 👍 Great community support
  • 👍 Easy to use and navigate
  • 👍 Accurate and informative
  • 👍 Comprehensive features
  • 👍 Valuable resource for first-time moms

Room to Improve

  • 🐛 Freezing and lagging issues
  • 🔍 Inaccurate baby size comparisons
  • 💬 Toxic and unsupportive community
  • 🚫 Excessive ads and notifications
  • 🚫 Outdated or biased information
  • 🚫 Gender-specific language and assumptions

More Fast Pregnancy Calculator apps to explore

FAQ about Fast Pregnancy Calculator

What are the best fast pregnancy calculator apps for iPhone?
FAST Pregnancy Calculator tops our fast pregnancy calculator apps ranking as of August 2026, with a 4.0-star average from 5 App Store ratings, and it's free to download.
Yes — 19 of the top fast pregnancy calculator apps we rank are free to download, including FAST Pregnancy Calculator and Pregnancy Baby Tracker - WTE.
FAST Pregnancy Calculator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ fast pregnancy calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
FAST Pregnancy Calculator determines gestation weeks by either using the first day of the last menstrual period or by inputting the date and gestation week of a previous ultrasound scan.
After calculating the gestation week, the app offers information on the progress of the pregnancy, providing insights into its development.