This app calculates estimated due dates for pregnancy, particularly for those undergoing fertility treatments like embryo transfer or IUI. It can also determine due dates based on ovulation or natural conception.

243+ iOS apps curated and reviewed
The best due date calculator fertility apps on iPhone average 3.9★ across 243+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.6★ (13) | No | No | May 2026 | |
| 2 | Free | — | Yes | No | Jul 2026 | |
| 3 | Free | 5.0★ (5) | No | No | Jul 2026 | |
| 4 | Free | 4.5★ (2.7K) | No | Yes | Aug 2026 | |
| 5 | Free | 4.8★ (90K) | No | No | Aug 2026 | |
| 6 | Free | 5.0★ (1) | Yes | Yes | Aug 2026 | |
| 7 | Free | 4.4★ (611) | Yes | Yes | Aug 2026 | |
| 8 | Free | — | Yes | No | May 2026 |

This app calculates estimated due dates for pregnancy, particularly for those undergoing fertility treatments like embryo transfer or IUI. It can also determine due dates based on ovulation or natural conception.



This medical app helps calculate Estimated Due Date (EDD) and Estimated Gestational Age (EGA). It offers two methods for calculation: using the Last Menstrual Period (LMP) or a provided EDD from Ultrasound (USS). The interface is designed for simplicity and speed.






This app helps track IVF pregnancies by calculating gestational age and estimated due dates based on embryo transfer dates. It supports multiple pregnancies, allows saving results, and integrates with your calendar. It also provides fun comparisons of fetal size to fruits.


This app helps users track their menstrual cycles, predict ovulation dates, and identify fertile windows to increase chances of conception. It offers a user-friendly interface to input cycle details and provides reminders for periods and ovulation.


Track your menstrual cycle, fertility, pregnancy, postpartum recovery, and menopause with personalized insights and expert articles. This app offers tools for ovulation prediction, baby growth tracking, and symptom management.


This medical app provides a comprehensive suite of tools for calculating gestational age, estimated due dates, and various risk assessments related to pregnancy and women's health. It includes calculators for maternity leave, cervical assessments, and cancer risk estimations, designed for healthcare professionals.


This app helps users track their menstrual cycles, predict ovulation dates, and identify fertile windows. It also assists in calculating pregnancy test dates and expected labor dates, offering a comprehensive tool for family planning and fertility awareness.


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 app helps you calculate date and time durations, add or subtract time from dates, and determine working days. It also converts between calendars and time zones, and estimates ovulation and pregnancy due dates. The design is simple and intuitive.


This app helps users identify their most fertile days to increase the chances of conception. It analyzes personal cycle data, offers fertility knowledge, and provides access to a supportive community.


This app helps organize fertility medication information and treatment schedules. It provides access to educational resources, discount program applications, and injection tutorials. A due date calculator is also included to assist users on their fertility journey.


Estimate key pregnancy dates, including conception, due date, and trimester milestones. Input your last menstrual period to receive personalized date calculations for various pregnancy stages.


Track pregnancy progress with detailed countdowns. View remaining time in various units like weeks, days, or even hours. Personalize your experience by adding your baby's name.


Calculate your baby's estimated due date based on your last menstrual period. This app provides a countdown to your baby's birth, helping you track your pregnancy.


This app helps you track your pregnancy, calculate your due date, and understand each stage. It provides week-by-week summaries of your baby's development and your body's changes, allowing you to log notes for later review or to share with your doctor.


Easily calculate your pet's pregnancy due date. This app provides accurate and instant results for various animals, helping you manage their gestation period without manual calculations.




This app helps you estimate key pregnancy dates, including your due date, conception date, and last period. It offers tools to adjust predictions based on ultrasound findings or a known due date. Consult healthcare professionals for precise medical advice.

