ObCalc puts 28 clinical calculators, scoring tools, and reference charts for obstetrics, maternal-fetal medicine, and general medicine into one fast, offline-first app — sourced to ACOG, SMFM, CMQCC, and NICHD guidelines.
One-time purchase. No subscription. No account required.
Organized the way you already think about your day — not a flat alphabetical list.
Bishop Score, Estimated Due Date, Pregnancy Re-dating, Weight Gain Tracker, UPCR, VBAC Success
CVR, Fetal Biometry, IUT Transfusion, MCA Doppler, Neonatal Morbidity, GDM Insulin, Skeletal Dysplasia, Twin Discordance, Umbilical Artery Doppler, Ponderal Index, Extremely Preterm Birth Outcome
Anion Gap, APGAR, BMI, Maternal Sepsis Assistant, CMQCC Sepsis Screen, Gestational Age, Iron Deficit, Peak Flow
VTE Anticoagulation Dosing
cfDNA PPV/NPV, Nuchal Translucency Percentile
Every formula is sourced to a published guideline and built as a clinical tool first.
No connection needed on L&D. Every calculation runs on-device.
ObCalc collects no data and contains no analytics or ad SDKs of any kind.
No subscription, no account required, no recurring charges.
Formulas cite ACOG, SMFM, CMQCC, and NICHD wherever applicable.
Switch units inline; every numeric field supports quick arithmetic entry.
New tools and guideline refreshes ship on an ongoing basis.
If a formula doesn't match your institution's protocol or a published source, we want to know. ObCalc is used at the bedside — accuracy reports get priority.
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