Comparison

Contraception vs OB Wheels

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

Head to head
About

Contraception

This app provides comprehensive guidelines on contraceptive method use based on medical eligibility criteria and selected practice recommendations. It assists healthcare providers in counseling individuals and couples on family planning choices, covering over 60 medical conditions and numerous clinical situations.

Highlights
  • U.S. Medical Eligibility Criteria (MEC)
  • U.S. Selected Practice Recommendations (SPR)
  • Covers over 60 characteristics/conditions
  • Addresses numerous clinical situations
  • Aids healthcare provider counseling
  • Based on CDC Morbidity and Mortality Weekly Report
Read full description

The U.S. Medical Eligibility Criteria for Contraceptive Use comprises recommendations for the use of specific contraceptive methods by patients who have certain characteristics or medical conditions. The U.S. Selected Practice Recommendations for Contraceptive Use addresses a select group of common, yet sometimes controversial or complex, issues regarding initiation and use of specific contraceptive methods. The app is developed directly from the CDC Morbidity and Mortality Weekly Report (MMWR) by the Division of Reproductive Health and covers more than 60 characteristics or medical conditions (U.S. MEC) and numerous clinical situations (U.S. SPR). These recommendations are intended to assist healthcare providers when they counsel women, men, and couples about contraceptive method choice and use. Although these recommendations are meant to serve as a source or clinical guidance, healthcare providers should always consider the individual clinical circumstances of each person seeking family planning services.

About

OB Wheels

This app calculates due dates, gestational age, and reconciles sonogram and LMP dates using a digital OB wheel and calendar. It offers a familiar interactive wheel for precise date calculations, accounting for leap years.

Highlights
  • Calendar calculator for EDD/EDC
  • Gestational age calculation
  • Interactive digital OB wheel
  • Reconciliation of due dates
  • Leap year accuracy
Features
Read full description

Does the world need another OB-wheel-due-date-calculator app? You bet! OB Wheels combines three things that clinicians need to derive all the dates necessary in pregnancy care, and no other app has this combination. It contains a calendar calculator to determine EDD (EDC) from LMP or from a sonogram report. The calendar calculator also provides gestational age (EGA) as of any date for a given EDD or LMP. Because the calculator works off the real calendar, it is accurate for leap years too. Then for all of you who miss your cardboard OB wheel, the app contains one which you can rotate, pinch and zoom, and generally play with just like a regular cardboard wheel. It's a little tricky to learn how to plant two fingers and rotate them rather than pinch-and-zoom to get rotation versus resizing. But the wheel works and it is accurate, especially so because you can zoom in to be sure where the little date hash lines lie. Finally, the app notes the most recent committee opinion scheme from ACOG on how one might reconcile due dates from LMP and sonograms to arrive at a single final EDD. To my knowledge, the scheme is authority-based and no better or worse than other schemes, but my practice and my learners need a single clear scheme, so this app includes one for easy reference. As an educator and clinician myself, I am grateful for feedback. Email me via the contact email at my website.

Screenshots

Contraception4 screens
OB Wheels4 screens

Verdict

The call

The clearest difference is review sentiment: Contraception at 64% against OB Wheels's 20%. Contraception also leads on rating (4.3 vs 2.3) and update cadence (every 7 months vs every 18 months). OB Wheels's advantage is iOS requirement (7.0 vs 16.0). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Contraception holds the better App Store score, 4.3 against 2.3. Both are backed by a comparable volume of ratings — 27 and 15 respectively. Written reviews point the same way: 64% of Contraception's written reviews are positive against 20% of OB Wheels's.

UpkeepUpdate frequency

Contraception ships an update every 7 months, OB Wheels every 18 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

Scorecard4 real differences · 6 level
Contraception versus OB Wheels: the parameters behind the verdict, then further details
ParameterContraceptionOB Wheels
PriceFreeFree
Rating4.3 (27 ratings) — better2.3 (15 ratings)
Positive reviews63.6% of reviews — better20.0% of reviews
Number of ratings27 — better15
Update frequencyEvery 7 months — betterEvery 18 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.07.0 — better
Further details — not scored
Size56 MB3 MB
Age rating12+17+
DeveloperCenters For Disease Control and PreventionJoshua D. steinberg

Customer experience

Contraception

All ratings27 ratings
Positive81.5%
Neutral7.4%
Negative11.1%
Written reviews11 reviews
Positive63.6%
Neutral9.1%
Negative27.3%

OB Wheels

All ratings15 ratings
Positive20.0%
Neutral13.3%
Negative66.7%
Written reviews10 reviews
Positive20.0%
Neutral10.0%
Negative70.0%

In-app purchases

None

Contraception

No in-app purchases

None

OB Wheels

No in-app purchases

Questions

Is Contraception free?
Contraception is free to download, with no in-app purchases.
Is OB Wheels free?
OB Wheels is free to download, with no in-app purchases.
Which has better reviews, Contraception or OB Wheels?
Contraception is rated higher. Contraception averages 4.3 out of 5 from 27 ratings, while OB Wheels averages 2.3 from 15 ratings.
Do Contraception or OB Wheels have ads?
Neither Contraception nor OB Wheels shows ads.
Which is updated more often, Contraception or OB Wheels?
Contraception ships an update every 7 months, and OB Wheels every 18 months. Most recently, Contraception was updated on October 23, 2026 and OB Wheels on October 26, 2026.

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