# IGCalcPT

> Gestational age & percentiles

Canonical page: [https://chrome-stats.com/d/id6749804503](https://chrome-stats.com/d/id6749804503)

## Overview

- **ID:** `id6749804503`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Ricardo Santos
- **Category:** Medical
- **Version:** 1.3.1
- **Last updated:** 2026-08-26
- **First published:** 2025-08-26
- **Size:** 50 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/igcalcpt/id6749804503)
- **Website:** [https://ricardosantos.eu/igcalcpt-calculadora-avancada-de-idade-gestacional-e-avaliacao-do-crescimento-fetal-para-a-populacao-portuguesa/](https://ricardosantos.eu/igcalcpt-calculadora-avancada-de-idade-gestacional-e-avaliacao-do-crescimento-fetal-para-a-populacao-portuguesa/)
- **Privacy policy:** [https://ricardosantos.eu/ig-calc-pt-privacy-policy/](https://ricardosantos.eu/ig-calc-pt-privacy-policy/)

## Description

Clinical obstetrics calculator: gestational age, fetal biometry and weight percentiles using the Portuguese reference charts (SPOMMF).

IGCalcPt is a precise gestational age and fetal weight percentile calculator for healthcare professionals, built around growth charts specific to the Portuguese population and recommended by the Portuguese Society of Maternal-Fetal Medicine.

KEY FEATURES

Accurate gestational age calculation:
• Multiple methods: LMP, conception date, embryo transfer (day 2–5), estimated due date
• Automatic conversion between dates and gestational ages
• Interactive calculator for any date
• Correct handling of time zones and leap years

Portuguese fetal percentiles:
• Growth charts validated for the Portuguese population
• Percentiles by sex (male, female, both)
• Interactive fetal growth charts with zoom
• Visual comparison with previous measurements

Patient management:
• Profiles with clinical notes
• Full measurement and percentile history
• Quick search by name or ID
• JSON backup and restore
• PDF report export

Specialised calculators:
• CRL (crown-rump length): GA at 5–14 weeks (Robinson & Fleming)
• Fetal biometry: estimated weight by Hadlock (BPD, HC, AC, FL)
• Automatic integration between calculators

Accessibility and privacy:
• Dark mode and a dedicated high-visibility mode
• Interface in Portuguese, English and French
• Fully offline — all data stays on the device
• No ads, no tracking, no data collection

SCIENTIFIC BASIS
Based on the doctoral research of Dr. Ricardo Santos using Portuguese population data:
Sousa-Santos RF, Miguelote RF, Cruz-Correia RJ, Santos CC, Bernardes JFMAL. Development of a birthweight standard and comparison with currently used standards. Eur J Obstet Gynecol Reprod Biol 2016;206:184-193.

WHO IS IT FOR
Obstetricians, gynaecologists, maternal-fetal medicine specialists, sonographers, specialised nurses and residents.

MEDICAL DISCLAIMER
This application is intended for qualified healthcare professionals. Calculators and percentiles are decision-support tools and do not replace clinical judgement.

## Rankings

- #1,143,570 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6749804503)