IVF Pregnancy Calculator
Tracks surrogacy pregnancies
Free · Designed for iPad. Not verified for macOS.
New in this update: a BMI calculator for gestational carriers, alongside IVF due dates, gestational age, and milestone planning. Free, private, and saved on your device.
IVF Pregnancy Calculator is a free tool for intended parents, gestational carriers, and fertility professionals. It turns embryo transfer details into due dates and gestational weeks, helps you plan key milestones, and now includes a BMI calculator.
IVF pregnancies are tracked two ways: gestational weeks, counted from the last menstrual cycle, and weeks post embryo transfer, counted from the transfer date. Converting between the two isn't always easy. Enter the transfer date and the age of the embryo, and the app does the math for you. In surrogacy contracts, both numbers can matter, such as the week a baby is considered premature or full term, and when certain contract benefits begin.
IVF CALCULATOR
• Calculate gestational age from embryo transfer details (day 3 to day 7 embryos)
• Estimate a due date from IVF transfer timing
• Work backward from an estimated due date
• Find the date of a specific gestational week or week after transfer
• Plan several milestone dates at once with the multi-date planner
• Just for fun, see the baby's size compared with a fruit, week by week
BMI CALCULATOR (NEW)
• Calculate body mass index in pounds and feet/inches, or kilograms and centimeters
• Many clinics require gestational carriers to have a BMI of 32 or less. Check with your clinic for their requirements.
• Uses the CDC adult BMI formula. Your measurements are not saved or shared with others.
SAVE, SHARE, AND PLAN
• Save results on your device and keep track of more than one pregnancy
• Share results by text or iMessage
• Add important dates to your calendar
MAKE IT YOURS
• Personalize the app with your own primary and accent colors
• Light and dark mode
PRIVATE BY DESIGN
Saved results and preferences stay on your device. Calendar access is optional and only used if you choose to save a date. Your information is only sent to Tsong Law Group if you choose to contact us.
ABOUT TSONG LAW GROUP
Tsong Law Group is a surrogacy law firm located in California and licensed in six states.
This app is for informational purposes only and is not a substitute for medical or legal advice. Medical sources, including ACOG and CDC, are listed in the app's Instructions tab.
BMI calculator: a new tab to calculate body mass index in US or metric units. Many clinics require gestational carriers to have a BMI of 32 or less.
The developer, Tsong Law Group, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tsong Law Group
- Size
- 39.6 MB
- Category
- Medical
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 Tsong Law Group, A.P.C.
