Comparison

Obstetrics Calculator vs GYNStat

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

Head to head
About

Obstetrics Calculator

This medical app provides a comprehensive suite of tools for calculating gestational age, estimated due dates, and various risk assessments related to pregnancy and women's health. It includes calculators for maternity leave, cervical assessments, and cancer risk estimations, designed for healthcare professionals.

Highlights
  • Gestational age and due date calculation
  • Multiple calculation methods (LMP, ultrasound, IVF)
  • Maternity leave timeframe estimation
  • Bishop Score and TOLAC probability
  • Cancer risk estimations (Breast, Cervical, Ovarian)
  • Follow-up after colposcopy
Features
Read full description

Obstetric Calculator will help you determine gestational age in weeks and days as well as estimated due date using last menstrual period, ultrasound report, ovulation/IVF and other methods. This set of tools ans scales contains: - Estimated Due Date & Gestational Age by First Day of Last Menstrual Period - Estimated Due Date & Gestational Age by Ultrasound Report - Estimated Due Date & Gestational Age by Conception Date - Estimated Due Date & Gestational Age by Quickening (= Fetal Movements) - Estimated Due Date & Gestational Age from Given Date - Timeframe for Maternity Leave - Gestational Age & last menstrual period from Estimated Due Date - Gestational Age by Crown-Rump Length - Gestational Age by Fetal Biometry - Estimated Fetal Weight by Mother's Biometry - Bishop Score (Quick Cervix Assessment) - Probability of Successful Vaginal Birth after Cesarean Section (or Trial of Labor) - Breast Cancer Risk Estimation (Gail Model) - Cervical Cancer Risk Estimation (ASCCP 2019 Guidelines) - Ovarian Cancer Risk (O-RADS, ADNEX, ROMA) - Follow-Up after Colposcopy/Treatment of CIN Each tool is provided with instructions ("i" in the upper right corner). This app was designed for educational use by health care providers in the field of Obstetrics & Gynecology.

About

GYNStat

Features
Read full description

Keep the OB/GYN tools you need close at hand, from clinic rounds to on-call care. GYNStat brings clinical calculations, staging and follow-up together in one app. Access every clinical tool. Keep patient follow-up and PDF reports in one place. • Access 43 clinical tools for calculations, staging and follow-up in one app. • Turn patient results into clinic-branded PDF reports and share them. • Open the relevant guidelines and publication references directly from the result. • Save, organize and follow patient results in one timeline. • Prepare patient summaries for AI services. You choose when to share with an external service. • HPV Screening · FIGO Cervix · FIGO Endometrium · FIGO Ovarian • IOTA · ROMA · Endo Biopsy • GDM · Preeclampsia · VTE Risk • PCOS · Ovarian Reserve · Ovulation Induction • Ectopic Pregnancy · PUL Triage · PPH · OHSS • PID · Vaginitis · GBS • WHO MEC · POP-Q · MRS · Osteoporosis ACOG · RCOG · ASCCP · FIGO · WHO · NICE · CDC · ASRM Clinical calculations work offline. Patient records stay on your device. You choose when to share PDFs or use external services. New users get 7 days of full access. Then 6 free modules remain. Unlock all 43 tools and the complete workflow with Premium. Subscription prices and terms appear before purchase. GYNStat does not make diagnoses; it is a clinical decision support tool. All treatment decisions remain the responsibility of the physician. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pleyra.com/gynstat/privacy

Screenshots

Obstetrics Calculator4 screens
GYNStat4 screens

Verdict

The call

The clearest difference is ads: GYNStat at none against Obstetrics Calculator's shown. Obstetrics Calculator's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Obstetrics Calculator sells 2 in-app purchases, starting at $1.99 per month and GYNStat sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
Obstetrics Calculator versus GYNStat: the parameters behind the verdict, then further details
ParameterObstetrics CalculatorGYNStat
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews54.5% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size90 MB38 MB
Age rating12+4+
DeveloperAlexander SnegirevMehmet Sabri Sepik

In-app purchases

2 purchases

Obstetrics Calculator

Subscriptions1
  • ObCalc Pro$1.991 Month
One-time1
  • Disable Ads$10.99
2 purchases

GYNStat

Subscriptions2
  • Monthly Premium Access$4.991 Month
  • Annual Premium Access$49.991 Year

Questions

Is Obstetrics Calculator free?
Obstetrics Calculator is free to download, with in-app purchases available.
Is GYNStat free?
GYNStat is free to download, with in-app purchases available.
Do Obstetrics Calculator or GYNStat have ads?
Obstetrics Calculator shows ads; GYNStat does not.
Which is updated more often, Obstetrics Calculator or GYNStat?
Obstetrics Calculator ships an update every 2 months, and GYNStat every 2 months. Most recently, Obstetrics Calculator was updated on October 14, 2026 and GYNStat on October 11, 2026.

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