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Obstetric Tools: OB Calculator

Pedro Iniesta

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About this app

Keep obstetric and neonatal reference tools together, from pregnancy dating to newborn assessment. Obstetric Tools is designed for midwives, obstetricians and other healthcare professionals. PREGNANCY AND MATERNAL CARE Use the pregnancy wheel to calculate gestational age and estimated due date. Explore IVF dating, estimated fetal weight with Hadlock IV, BMI and pregnancy weight gain, serial beta-hCG change, amniotic fluid assessment, twin weight discordance, mean arterial pressure and blood loss calculations. NEWBORN CARE AND CLINICAL SCALES Find Apgar, Bishop, Silverman-Andersen, Edinburgh, PUQE-24, LATCH and other reference scales. Calculate corrected age and newborn weight change. Search the tool catalog and open explanations, reference tables and sources from each tool. FREE TOOLS AND OPTIONAL PRO Use the available free tools or choose an individual monthly or annual auto-renewing Pro subscription for all Pro tools and an ad-free experience. The store shows the price and billing period before purchase. Manage or cancel renewal in your store settings. No app account is required. PRIVACY AND CLINICAL USE Clinical calculations run on your device. Technical usage, purchase and diagnostic data are described in the privacy policy; clinical inputs are not included in analytics events. For professional information and education. This app is not a medical device and does not diagnose, prescribe or replace clinical judgement. Check results against the clinical context, original references and your local protocols. Privacy: https://milkynest.com/privacy/ EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

What's new

Version 3.0.0 · Oct 22, 2026

3.0 brings more obstetric and neonatal tools, clearer explanations and tables, a redesigned introduction and Pro screen, and improvements for phones and tablets.

In-app purchases

The most popular purchases on the App Store.

  • Obstetric Tools Pro AnnualSubscriptionUSD 24.99 / year
  • Obstetric Tools Pro MonthlySubscriptionUSD 3.99 / month
  • Premium AnnualSubscription · 7 days free trialUSD 4.99 / year
  • Premium MonthlySubscription · 7 days free trialUSD 1.99 / month