# Obstetrum: OB-GYN Calculator > Gestational age, fetal weight, insulin, Bishop, VBAC, PPH. ACOG/WHO/FIGO based. Canonical page: [https://chrome-stats.com/d/com.blastoapps.obstetrum](https://chrome-stats.com/d/com.blastoapps.obstetrum) ## Overview - **ID:** `com.blastoapps.obstetrum` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** BlastoApps - **Category:** MEDICAL - **Downloads:** 1,330 - **Version:** 5.0.5 - **Last updated:** 2026-08-30 - **First published:** 2025-03-02 - **Publisher country:** MX - **Size:** 35 MB - **Data as of:** 2026-09-07 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.blastoapps.obstetrum) - **Website:** [https://c3d0cf3e7.app-ads-txt.com](https://c3d0cf3e7.app-ads-txt.com/) - **Privacy policy:** [https://doc-hosting.flycricket.io/obstetrum-calculo-obstetrico-privacy-policy/323b218c-2c72-42c1-be41-144fc9a21563/privacy](https://doc-hosting.flycricket.io/obstetrum-calculo-obstetrico-privacy-policy/323b218c-2c72-42c1-be41-144fc9a21563/privacy) ## Description Evidence-based obstetric calculator with 11+ clinical tools. Gestational age dating, fetal weight estimation, obstetric insulin dosing with 7 international guidelines. Powered by ACOG, WHO 2025, and FIGO. This app is not a medical device and does not diagnose, treat, or prevent any condition.

πŸ”¬ PRENATAL CARE CALCULATORS

β€’ Gestational Age β€” ACOG CO 700 dating hierarchy: IVF > 1st trimester CRL USG > LMP > 2nd/3rd trimester USG
β€’ Estimated Fetal Weight β€” Hadlock 1991 formulas, INTERGROWTH-21st percentiles, p3–p97 classification
β€’ Fundal Height β€” INTERGROWTH-21st percentiles, weeks 13–40, serial trend curve
β€’ Gestational Weight Gain β€” IOM guidelines by pre-pregnancy BMI and gestational age
β€’ Fetal Doppler β€” Umbilical fluxometry, resistance indices, FGR staging
β€’ Insulin in Pregnancy β€” 7 guidelines: ADA/ACOG, NICE, FIGO, ALAD, ADIPS, CDA, GEDE. GDM + pregestational T1/T2. Corticosteroid protocol. FDA 2026 CDS traceability

⚑ OBSTETRIC EMERGENCIES

β€’ Oxytocin β€” Induction and augmentation protocols with dose escalation
β€’ Magnesium Sulfate β€” Zuspan protocol, loading and maintenance dosing
β€’ Bishop Score β€” Score 0–13, favorable/unfavorable classification, cervical ripening recommendation
β€’ Emergency Algorithms β€” Clinical decision trees for urgent management

🩸 POSTPARTUM HEMORRHAGE (PPH)

Full module based on WHO 2025 Bundle MOTIVE protocol:
β€’ Obstetric shock index
β€’ Medications with evidence levels A/B/C
β€’ Drug-specific contraindications
β€’ Risk stratification and severity classification

🀰 PERINATAL PERIOD

β€’ VBAC Predictor β€” 3 models: Grobman 2007, updated Grobman 2021, and Flamm-Geiger

πŸ“Š INTERNATIONAL STANDARDS

Every result cites its source. Implemented guidelines: ACOG CO 700, WHO 2025, FIGO, NICE, ADA, ALAD, ADIPS, CDA, GEDE, IOM, Hadlock 1991, INTERGROWTH-21st, Zuspan, Grobman, Flamm-Geiger.

πŸ“‹ CLINICAL RECORDS

β€’ Patient calculation history with audit trail
β€’ Professional clinical PDF reports with plotted percentiles and physician signature
β€’ Record comparison: side-by-side clinical evolution
β€’ Local database β€” your data never leaves your device

πŸ”’ TOTAL PRIVACY

Local SQLite database. No remote servers, no mandatory accounts, no cloud sync. Your clinical data stays on your device.

πŸ’Ž OBSTETRUM PREMIUM

All calculators are available without a subscription. Premium unlocks:
β€’ Unlimited patient records
β€’ Professional clinical PDF reports
β€’ Clinical record comparison
β€’ Ad-free experience

Clinical decision support tool for obstetric healthcare professionals. ## Rankings - #1,065,041 β€” Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.blastoapps.obstetrum.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.google.android.gms.permission.AD_ID` ## Similar extensions and apps - [Obstetric Calculator](https://chrome-stats.com/d/oleh.balychev.calculator_edb) β€” 28,432 users - [Obstetric Tools & Gestogram](https://chrome-stats.com/d/com.anonymous.ObstetricTools) β€” 48,053 users - [Obstetric Calculator](https://chrome-stats.com/d/com.Alefrei.ObstetricCalculator) β€” 1,054,194 users, 4.30 / 5 - [Dr. Sapto ObstetriCalc](https://chrome-stats.com/d/com.drsaptolabs.obstetric_calculator) β€” 634 users - [Obstetric Calculator Pro](https://chrome-stats.com/d/oleh.balychev.calculator_edb.pro) - [Gestograma Pro: Obstetricia](https://chrome-stats.com/d/app.netlify.wonderful_tartufo_52d3ef.twa) β€” 55 users - [Obstetrics & Gynecology Scores](https://chrome-stats.com/d/com.obstetrics.gynecology.scores) - [GestAge OB Guide](https://chrome-stats.com/d/com.gestage.obguide) β€” 4 users - [ObiCalc - Obstetric Calculator](https://chrome-stats.com/d/com.obicalc.app) β€” 892 users - [Calculadora ObstΓ©trica](https://chrome-stats.com/d/mx.mikeni.calculator) β€” 23 users - [Obstetrician calculator](https://chrome-stats.com/d/com.obstetrician.calculator) β€” 114 users - [Obstetric Tools](https://chrome-stats.com/d/com.mub.obstetric_tools) β€” 7,415 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.blastoapps.obstetrum)