Comparison

OB Calc (cloud) vs Obstetric Calculator Plus

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

Head to head
About

OB Calc (cloud)

This medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.

Highlights
  • LMP, EDC, Ultrasound, CRL, and IVF calculations
  • Customizable test date ranges
  • Cross-device data syncing
  • PDF report generation
  • Save individual patient data
Features
Read full description

While similar to a pregnancy wheel, OB Calc (cloud) is specifically designed by an obstetrician, for obstetricians. Finally obstetricians have an efficient and simple method to calculate the important test date windows for patients. CALCULATION METHODS • Last Menstrual Period (LMP) • Expected Delivery Date (EDC) • Sonogram Date and Fetal Age (Sonogram) • Crown Rump Length (CRL) • In Vitro Fertilization (IVF) Try the app for free for 7 days. A low monthly autorenewable subscription gives users access to premium features such as all calculation methods and saving of individual patient data. You can reach the developer directly at support@inpocketsolutions.com FEATURES • LMP, EDC, Ultrasound, CRL and IVF Method Calculations • Customize up to 15 tests, with date ranges • Data synced across multiple devices • Generate a PDF file • Save individual patient data CRL data reference : https://obgyn.onlinelibrary.wiley.com/doi/pdf/10.1002/uog.7654 Terms & Conditions: https://inpocketsolutions.com/terms ** Disclaimer Remember to test out the app on your specific device to ensure calculations are verified to your expectation.

About

Obstetric Calculator Plus

This medical app assists healthcare professionals in calculating gestational age, fetal age, and estimated due dates for pregnant patients. It also includes BMI calculation to support patient care.

Highlights
  • Gestational age calculation
  • Fetal age calculation
  • Estimated date of delivery
  • BMI calculation
  • Supports LMP and ultrasound dates
Features
Read full description

This application is designed to facilitate the calculation of gestational age for obstetricians, general practitioners, midwives, health workers and others who are involved with pregnant mothers. The calculation of fetal age is based on the date of the last menstrual period and ultrasound, and the estimation of the probable date of delivery is also included. BMI calculation is also provided to aid the care.

Screenshots

OB Calc (cloud)4 screens
Obstetric Calculator Plus4 screens

Verdict

The call

The clearest difference is in-app purchases: Obstetric Calculator Plus at none against OB Calc (cloud)'s 2. Obstetric Calculator Plus also leads on iOS requirement (11.0 vs 18.0). OB Calc (cloud)'s advantage is update cadence (every 3 months vs every 19 months) and rating (5.0 vs 4.7). On price, ratings volume, ads 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. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. Obstetric Calculator Plus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OB Calc (cloud) holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 5 and 7 respectively.

UpkeepUpdate frequency

OB Calc (cloud) ships an update every 3 months, Obstetric Calculator Plus every 19 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
OB Calc (cloud) versus Obstetric Calculator Plus: the parameters behind the verdict, then further details
ParameterOB Calc (cloud)Obstetric Calculator Plus
PriceFreeFree
Rating5.0 (5 ratings) — better4.7 (7 ratings)
Positive reviews0.0% of reviews—
Number of ratings57 — better
Update frequencyEvery 3 months — betterEvery 19 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS18.011.0 — better
Further details — not scored
Size14 MB34 MB
Age rating4+4+
DeveloperGlen BothaMehdi Taghavi

Customer experience

OB Calc (cloud)

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Obstetric Calculator Plus

All ratings6 ratings
Positive83.3%
Neutral16.7%
Negative0.0%

In-app purchases

2 purchases

OB Calc (cloud)

Subscriptions2
  • Monthly Subscription$2.991 Month
  • Premium (Annual)$29.991 Year
None

Obstetric Calculator Plus

No in-app purchases

Questions

Is OB Calc (cloud) free?
OB Calc (cloud) is free to download, with in-app purchases available.
Is Obstetric Calculator Plus free?
Obstetric Calculator Plus is free to download, with no in-app purchases.
Which has better reviews, OB Calc (cloud) or Obstetric Calculator Plus?
OB Calc (cloud) is rated higher. OB Calc (cloud) averages 5.0 out of 5 from 5 ratings, while Obstetric Calculator Plus averages 4.7 from 7 ratings.
Do OB Calc (cloud) or Obstetric Calculator Plus have ads?
Neither OB Calc (cloud) nor Obstetric Calculator Plus shows ads.
Which is updated more often, OB Calc (cloud) or Obstetric Calculator Plus?
OB Calc (cloud) ships an update every 3 months, and Obstetric Calculator Plus every 19 months. Most recently, OB Calc (cloud) was updated on October 29, 2026 and Obstetric Calculator Plus on October 30, 2026.

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