IGCalcPT vs SonoCue
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
IGCalcPT
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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 2ā5), estimated due date ⢠Automatic conversion between dates and gestational ages ⢠Interactive calculator for any date ⢠Before a patient's dating is changed, shows today's GA by the stored dating and by the new one ⢠Correct handling of time zones and leap years Portuguese fetal percentiles: ⢠Growth charts validated for the Portuguese population ⢠Percentiles by sex (male, female, both), with one decimal below P10 and above P90 ⢠Twins and triplets: each fetus with its own reference table, and weight discordance flagged from 20% ⢠Interactive fetal growth charts with zoom ⢠Visual comparison with previous measurements Patient management: ⢠Profiles with clinical notes ⢠Full measurement and percentile history; saved weights can be corrected ⢠Saved weights follow a corrected dating and the fetal sex ⢠Close a pregnancy and start the next one on the same record ⢠Undo after deleting a patient, a weight or a pregnancy ⢠Quick search by name or ID ⢠JSON backup and restore ⢠PDF report with chart and measurements, dated, with the GA on the day Specialised calculators: ⢠CRL (crown-rump length): GA at 5ā14 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: data are stored on the device and are not sent to the developer ⢠The device's own backup may include the data ⢠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.
SonoCue
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SonoCue is a clinical reference tool built for the scan room ā for credentialed diagnostic medical sonographers (RDMS or equivalent) and ultrasound students. Not for patient use, not medical advice, not a diagnostic device. Created by Tricia Henderson, RDMS ā a travel sonographer with nearly 30 years of clinical experience. Every finding in the database was authored and reviewed by her. WHAT'S INSIDE DIFFERENTIAL FINDER Searchable database of ultrasound findings across Obstetric, Gynecologic, Abdominal, Vascular, Neonatal, and Superficial Structures. Each entry includes: ⢠Threshold or measurement ⢠Common associations ⢠Next scan steps ⢠Clinical pearls ⢠Severity classification (normal variant, watch, abnormal, critical) ⢠Last-reviewed date REFERENCE TOOLS Society-cited formulas you reach for daily, in one offline-first app: ⢠Gestational age tables (Hadlock 1984) ⢠Estimated fetal weight calculator (Hadlock 4-parameter, 1991) ⢠Biophysical profile (BPP) scorer (Manning, 1980) ⢠Umbilical artery Doppler norms (Acharya, 2005) ⢠Cervical length stratification ⢠Amniotic fluid index (Phelan / Magann) Every calculator shows its formula source on screen. AI ANALYZE Describe what you see ā get structured differential considerations to evaluate. Not a diagnosis, not a substitute for clinical judgment. Constrained by safety guardrails: refuses dosing requests, refuses non-sonography modalities, refuses anything framed as a definitive diagnosis. Capped at 5 uses per account per day. Every response is labeled AI-generated, shows its reasoning, and can be flagged for review. WHO IT'S FOR SonoCue is exclusively for trained ultrasound professionals ā credentialed sonographers, ultrasound students, sonography educators, and physician sonographers. It is not designed for, and may not be used by, patients or untrained individuals. PRIVACY SonoCue is designed to actively prevent Protected Health Information (PHI) from being processed. Input text is sanitized for PHI patterns on your device and again on our server before any AI provider receives it. We do not store input text or AI responses tied to your account. We are not a HIPAA-covered service ā see in-app Privacy Policy for details. OFFLINE-FIRST Differential Finder, Reference Tools, and Bookmarks all work offline. Once installed, you don't need a connection for the things you reach for during a scan. ABOUT THE BUILDER SonoCue is an independent app created by Pixel & Pulse Travelers. It is not affiliated with any imaging vendor, hospital system, or society. Questions or feedback: sonocue@pixelandpulsetravelers.com
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Verdict
IGCalcPT and SonoCue are too close to call on the numbers: across 6 compared parameters ā price, update cadence, ads and in-app purchases among them ā neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
IGCalcPT ships an update every 2 months, SonoCue monthly. The most recent releases landed on October 20, 2026 and October 1, 2026 respectively.
| Parameter | IGCalcPT | SonoCue |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Monthly ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod ā better | iPhone, iPod |
| Requires iOS | 15.0 ā better | 15.1 |
| Further details ā not scored | ||
| Size | 31 MB | 29 MB |
| Age rating | 17+ | 17+ |
| Developer | OBGYNART - OBSTETRICIA, GINECOLOGIA E MEDICINA DA REPRODUCAO, LDA | Otis Henderson |
In-app purchases
IGCalcPT
No in-app purchases
SonoCue
No in-app purchases
Questions
Is IGCalcPT free?
Is SonoCue free?
Do IGCalcPT or SonoCue have ads?
Which is updated more often, IGCalcPT or SonoCue?
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