Comparison

Obstetric Calculator Plus vs OB Wheel

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

Head to head
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.

About

OB Wheel

This app assists expectant mothers and healthcare professionals in tracking pregnancy with accurate due date calculations and weekly fetal development updates. It offers customizable features, health tips, and tools for clinicians to support patient care throughout the journey to delivery.

Highlights
  • Accurate due date calculation
  • Weekly fetal development tracker
  • Customizable reminders and tracking
  • Health tips and resources
  • Tools for healthcare professionals
  • Symptom and feeling logging
Features
Read full description

Promotional Text for OB Wheel App "Introducing the OB Wheel App – Your Personalized Pregnancy Journey Companion! Navigating through pregnancy just got easier and more reliable with the OB Wheel App, specially designed for expectant mothers and healthcare professionals. Say goodbye to guesswork and hello to precision with our user-friendly app that offers accurate, at-a-glance pregnancy tracking. Key Features: Accurate Due Date Calculation: Simply enter your last menstrual period, and let our app do the rest. Get precise due dates and important milestones at your fingertips. Fetal Development Tracker: Watch your baby's growth week-by-week. Learn about developmental stages, size comparisons, and exciting changes as your pregnancy progresses. Customizable Experience: Every pregnancy is unique. Customize the app to suit your journey – set reminders, track appointments, and record your feelings and symptoms. Health Tips & Resources: Stay informed with valuable insights, nutritional advice, and tips for maintaining a healthy pregnancy from conception to delivery. Professional Tools for Clinicians: A handy resource for obstetricians and midwives, offering gestational age calculations, weight and length estimations, and more to support patient care. Why Choose OB Wheel App? Simplicity and Ease of Use: Designed with you in mind, our app is intuitive and straightforward, making pregnancy tracking stress-free. Trusted and Reliable: Developed in collaboration with healthcare professionals, ensuring accuracy and up-to-date information. Stay Connected: Share milestones with loved ones and keep your healthcare team in the loop with easy sharing options. Embrace the beauty of pregnancy and enjoy peace of mind with the OB Wheel App. Whether you're a first-time mom or a seasoned pro, our app will be by your side every step of the way. Download now and start your extraordinary journey to motherhood with confidence and joy! Privacy policy: https://odindevstudio.wordpress.com/privacy-policy Terms of use and Terms of Subscription https://odindevstudio.wordpress.com/terms

Screenshots

Obstetric Calculator Plus4 screens
OB Wheel4 screens

Verdict

The call

The clearest difference is in-app purchases: Obstetric Calculator Plus at none against OB Wheel's 2. Obstetric Calculator Plus also leads on rating (4.7 vs 4.3) and iOS requirement (11.0 vs 14.0). OB Wheel's advantage is update cadence (every 4 days vs every 19 months). On price, ratings volume, ads and monetization model 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 Wheel sells 2 one-off in-app purchases. Obstetric Calculator Plus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Obstetric Calculator Plus holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 7 and 10 respectively.

UpkeepUpdate frequency

Obstetric Calculator Plus ships an update every 19 months, OB Wheel every 4 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 5 level
Obstetric Calculator Plus versus OB Wheel: the parameters behind the verdict, then further details
ParameterObstetric Calculator PlusOB Wheel
PriceFreeFree
Rating4.7 (7 ratings) — better4.3 (10 ratings)
Number of ratings710 — better
Update frequencyEvery 19 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better14.0
Further details — not scored
Size34 MB28 MB
Age rating4+17+
DeveloperMehdi TaghaviBerkay Gurcesme

Customer experience

Obstetric Calculator Plus

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

OB Wheel

All ratings10 ratings
Positive80.0%
Neutral10.0%
Negative10.0%

In-app purchases

None

Obstetric Calculator Plus

No in-app purchases

2 purchases

OB Wheel

One-time2
  • Ob Wheel lifetime ad-free$3.99
  • Unlimited Ad-free Ob wheel$9.99

Questions

Is Obstetric Calculator Plus free?
Obstetric Calculator Plus is free to download, with no in-app purchases.
Is OB Wheel free?
OB Wheel is free to download, with in-app purchases available.
Which has better reviews, Obstetric Calculator Plus or OB Wheel?
Obstetric Calculator Plus is rated higher. Obstetric Calculator Plus averages 4.7 out of 5 from 7 ratings, while OB Wheel averages 4.3 from 10 ratings.
Do Obstetric Calculator Plus or OB Wheel have ads?
Neither Obstetric Calculator Plus nor OB Wheel shows ads.
Which is updated more often, Obstetric Calculator Plus or OB Wheel?
Obstetric Calculator Plus ships an update every 19 months, and OB Wheel every 4 days. Most recently, Obstetric Calculator Plus was updated on November 3, 2026 and OB Wheel on November 4, 2026.

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