Comparison

ObCalc vs Protocols High

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

ObCalc

Features
Currently charting
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ObCalc puts the calculators, scoring tools, and reference charts that obstetrics, maternal-fetal medicine, and labor & delivery teams reach for every shift into one fast, offline-first app. Every formula is sourced to published guidelines (ACOG, SMFM, CMQCC, NICHD) and built as a clinical tool first β€” clean inputs, clear interpretation, no clutter. OBSTETRICS β€’ Bishop Score β€’ Estimated Due Date β€” LMP, ultrasound, conception, ovulation, or IVF transfer dating β€’ Pregnancy Re-dating (ACOG Committee Opinion 700) β€’ Pregnancy Weight Gain Tracker β€’ Urine Protein:Creatinine Ratio (UPCR) β€’ VBAC Success Calculator β€” Grobman MFMU model β€’ VBAC at Delivery Admission Success Calculator β€” Grobman MFMU model PERINATOLOGY / MFM β€’ CVR (CPAM Volume Ratio) β€’ Extremely Preterm Birth Outcome (NICHD) β€’ Fetal Biometry Suite β€” Hadlock EFW, long-bone ratios, multi-panel z-scores and percentiles β€’ Intrauterine Transfusion (IUT) Volume Calculator β€’ MCA Doppler / PSV for Fetal Anemia β€’ Neonatal Morbidity Risk β€’ Ponderal Index β€’ GDM Insulin Dosing β€’ Life-Limiting Skeletal Dysplasia Screen β€’ Twin Discordance β€’ Umbilical Artery Doppler GENERAL β€’ Anion Gap β€’ Apgar Score β€’ BMI β€’ Iron Deficit β€’ Peak Flow β€’ Gestational Age (date difference) β€’ Maternal Sepsis Assistant (qSOFA / Sepsis-3) β€’ CMQCC Sepsis Screen THROMBOPHILIA β€’ VTE Anticoagulation Dosing (ACOG Practice Bulletin 196) GENETICS β€’ cfDNA PPV/NPV Calculator β€’ Nuchal Translucency Percentile WHY CLINICIANS CHOOSE OBCALC β€’ Offline-first β€” no connection needed on L&D β€’ Fast, distraction-free interface β€” no ads, no tracking β€’ One-time purchase. No subscription, no account required β€’ Regularly updated with new tools and guideline changes β€’ Built-in unit conversion and inline number-pad arithmetic on every input ObCalc is a clinical reference tool intended for use by licensed healthcare professionals. It does not replace clinical judgment, and results should be confirmed against current guidelines and your institution's protocols.

About

Protocols High

Features
Read full description

"Try before you buy" - Download the FREE App, which includes sample content. In-App purchase required to unlock all content. Experience and evidence fused for best-practice management of high-risk pregnancies Through seven editions, Protocols for High-Risk Pregnancies has helped busy obstetricians keep pace with a constantly evolving field. Providing just-in-time content, its focus on protocols and guidelines helps organize medical thinking, avoid heuristic errors of omission and commission, and optimize maternal and fetal outcomes. As with the prior six editions, the editors (Queenan, Spong and Lockwood) have once again assembled some of the world’s top obstetrical and medical experts. This seventh edition has also been expanded to include a number of new topics, including: Protocols on opioid use, misuse and addition in pregnancy and postpartum Noninvasive prenatal diagnosis of aneuploidy Periconceptual genetic screening Expanded protocols on maternal valvular heart disease and cardiomyopathies Protocols on arboviruses, including Zika and malaria Protocols for High-Risk Pregnancies: An Evidence-Based Approach will be an essential reference for obstetricians, medical students, general practitioners and all medical professionals who are seeking the most up-to-date information and guidance on high-risk pregnancies. 
Content licensed from printed ISBN 10: 1119635292 Content licensed from printed ISBN 13: 9781119635291 If you have any questions or comments, email us any time: customersupport@skyscape.com or call 508-299-3000 Privacy Policy - https://www.skyscape.com/terms-of-service/privacypolicy.aspx Terms and Conditions - https://www.skyscape.com/terms-of-service/licenseagreement.aspx Author(s): John T. Queenan, Catherine Y. Spong, Charles J. Lockwood Publisher: Wiley-Blackwell

Screenshots

ObCalc4 screens
Protocols High4 screens

Verdict

The call

The clearest difference is price: Protocols High at Free against ObCalc's $6.99. Protocols High also leads on iOS requirement (13.0 vs 26.0). ObCalc's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Protocols High is free to download; ObCalc costs $6.99 up front. Protocols High sells 1 one-off in-app purchase. ObCalc asks for nothing beyond the download.

UpkeepUpdate frequency

ObCalc ships an update every 5 weeks, Protocols High every 6 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

Scorecard6 real differences Β· 1 level
ObCalc versus Protocols High: the parameters behind the verdict, then further details
ParameterObCalcProtocols High
Price$6.99Free β€” better
Update frequencyEvery 5 weeks β€” betterEvery 6 months
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
Best chart rank#103 β€” betterβ€”
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS26.013.0 β€” better
Further details β€” not scored
Size3 MB47 MB
Age rating17+17+
DeveloperCode Nine Labs LLCSkyscape Medpresso Inc

In-app purchases

None

ObCalc

No in-app purchases

1 purchases

Protocols High

One-time1
  • Protocols High-Risk Pregnancy$99.99

Questions

Is ObCalc free?
ObCalc costs $6.99, with no in-app purchases.
Is Protocols High free?
Protocols High is free to download, with in-app purchases available.
Do ObCalc or Protocols High have ads?
Protocols High shows ads; ObCalc does not.
Which is updated more often, ObCalc or Protocols High?
ObCalc ships an update every 5 weeks, and Protocols High every 6 months. Most recently, ObCalc was updated on October 29, 2026 and Protocols High on October 27, 2026.

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