Obstetrum: OB-GYN Calculator
No in-app products collected for this app.
| Rating | |||
|---|---|---|---|
| Mexico | 75%3 | 5.00 | |
| Brazil | 25%1 | 5.00 | |
| United Arab Emirates | <1%0 | — | |
| Afghanistan | <1%0 | — | |
| Antigua And Barbuda | <1%0 | — | |
| Anguilla | <1%0 | — | |
| Albania | <1%0 | — | |
| Armenia | <1%0 | — | |
| Angola | <1%0 | — | |
| Argentina | <1%0 | — |
Description
11 active obstetric calculators — updated 2026. Insulin dosing with 7 international guidelines (ADA/ACOG, NICE, FIGO, ALAD, ADIPS, CDA, GEDE). PPH with WHO 2025 protocol. VBAC with 3 predictive models. ACOG CO 700 gestational dating. 100% local data.
Most obstetric calculator apps on the market stopped being updated between 2014 and 2021. Obstetrum maintains current clinical guidelines — including the WHO 2025 PPH protocol and FDA 2026 CDS traceability in the insulin module.
PRENATAL CARE
Gestational age — ACOG CO 700 dating hierarchy (IVF > 1st trim CRL USG > LMP > 2nd/3rd trim USG)
Estimated fetal weight — Hadlock 1991, INTERGROWTH-21st percentiles (p3–p97)
Fundal height — INTERGROWTH-21st, weeks 13–40, serial trend curve
Gestational weight gain — IOM guidelines by pre-pregnancy BMI
Fetal Doppler — Umbilical fluxometry, resistance indices, FGR staging
Insulin in pregnancy — 7 guidelines: ADA/ACOG, NICE, FIGO, ALAD, ADIPS, CDA, GEDE. GDM and pregestational T1/T2 diabetes. No other app offers multi-guideline obstetric insulin dosing.
OBSTETRIC EMERGENCIES
Oxytocin — Induction and augmentation protocols
Magnesium sulfate — Zuspan protocol, loading and maintenance
Bishop score — Score 0–13, favorability and ripening recommendation
Postpartum hemorrhage — WHO 2025 Bundle MOTIVE, shock index, evidence levels A/B/C
PERINATAL PERIOD
VBAC predictor — Grobman 2007, updated Grobman 2021, and Flamm-Geiger
CLINICAL RECORDS & PDF
Patient calculation history, professional PDF reports with plotted percentiles, record comparison, physician signature.
PRIVACY
Local SQLite database. No remote servers. No cloud sync. No mandatory accounts.
PREMIUM — all calculators are accessible without subscription
Unlimited records, PDF reports, record comparison, ad-free
Not a regulated medical device. Clinical decision support tool for healthcare professionals.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/