Comparison

USPSTF Prevention TaskForce vs The OB Wheel Pro 7

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

Head to head
About

USPSTF Prevention TaskForce

This app provides primary care clinicians with evidence-based recommendations for preventive services. It helps identify appropriate screening, counseling, and medication services for patients based on their individual characteristics.

Highlights
  • Access USPSTF recommendations
  • Search by patient characteristics
  • Identify screening services
  • Find counseling services
  • Discover preventive medications
Features
Read full description

The Prevention TaskForce (formerly ePSS) is an application designed and developed by the U.S. Department of Health & Human Services (HHS), Agency for Healthcare Research and Quality (AHRQ), the Nation's lead Federal agency for research on health care quality, costs, outcomes and patient safety. It was developed by AHRQ to support the independent U.S. Preventive Services Task Force (USPSTF). The USPSTF is an independent, volunteer panel of national experts in prevention and evidence-based medicine. AHRQ provides support to the USPSTF. The Prevention TaskForce application was developed to assist primary care clinicians identify the screening, counseling, and preventive medication services that are appropriate for their patients. The Prevention TaskForce information is based on the current recommendations of the U.S. Preventive Services Task Force (USPSTF) and can be searched by specific patient characteristics, such as age, sex, and selected behavioral risk factors. When using this tool please read the specific recommendation to determine if the preventive service is appropriate for your patient. This tool is not meant to replace clinical judgment and individualized patient care. *Application downloads and data updates require internet connectivity

About

The OB Wheel Pro 7

This medical tool assists healthcare professionals in prenatal care by calculating gestational age, fetal weight, and risk tables. It offers a comprehensive suite of calculators for EDD, LMP, conception dates, and ultrasound biometrics, replacing multiple apps and physical wheels.

Highlights
  • Gestational Age Calculator
  • Ultrasound Biometric Calculator
  • Fetal Weight Calculator
  • Risk Table for Trisomy 21
  • BMI Calculator
  • Apple Watch App
Features
Read full description

The OB Wheel Pro 7 is the most complete, powerful, and easiest-to-use tool for healthcare professionals providing prenatal care. In just ONE app there is 1) a gestational age calculator, 2) an ultrasound biometric calculator, 3) a fetal weight calculator, 4) a list of key weeks and trimesters, 5) an age-adjusted risk table for trisomy 21 and aneuploidy, 6) a BMI calculator, and NOW 7) an Apple Watch app is included with your purchase! The OB Wheel Pro 7 is a state-of-the-art gestational age calculator (also known as an obstetric or pregnancy wheel) that is used every day by doctors, obstetricians, midwives, nurses, and pregnant women. The OB Wheel Pro 7 is a professional tool that replaces the need for multiple apps and it greatly enhances the functionality of those worn-out cardboard wheels without compromise. The OB Wheel Pro 7 accurately determines the estimated delivery date (EDD), or due date, of a pregnancy based on the first day of a woman's last menstrual period (LMP), or from the date of conception, or from a known gestational age (GA) on a known date, e.g. from an ultrasound measurement, or from fetal biometry like Crown-Rump Length (CRL), Femur Length (FL), and BiParietal Diameter (BPD). Additionally, for appropriate gestational ages, The The OB Wheel Pro 7 estimates fetal weight and displays the number of days completed and remaining. The OB Wheel Pro 7, besides calculating GA from fetal ultrasound biometrics, enables clinicians to also calculate Estimated Fetal Weight (EFW) from FL, BPD, Head Circumference (HC), and Abdominal Circumference (AC) using the most appropriate published reference formula using the maximum and most appropriate parameters. Prenatal care providers know that there are key gestational ages where testing or interventions are needed. The OB Wheel Pro 7 lets providers see at a glance when these items should be scheduled. FEATURES • Includes Apple Watch app! • Gestational Age Calculator from LMP, EDD, Conception Date for any reference date • Gestational Age calculated from specific date and gestational age (e.g. ultrasound) • Gestational Age Calculator using fetal biometrics (CRL, FL, BPD) • Fetal Weight Calculator using HC, AC, FL, BPD • Body Mass Index (BMI) Calculator • Age-Adjusted Risk Table for Trisomy 21 and aneuploidy • List of key completed weeks during pregnancy • Pregnancy days completed and remaining, and dates for each trimester • Remembers last-used EDD PRO TIPS: • To enter Gestational Age, CRL, FL, or BPD for a specific date (like for an ultrasound exam), tap "Today", enter the desired date, then tap on the button displaying the gestational age to change that button to display options for entering a specific GA, CRL, FL, and BPD. • When using the GA calculator, double-tap a date to change the value to the current date. • When using the EFW calculator, double-tap a value to clear the value of the selected parameter.

Screenshots

USPSTF Prevention TaskForce4 screens
The OB Wheel Pro 74 screens

Verdict

The call

The clearest difference is price: USPSTF Prevention TaskForce at Free against The OB Wheel Pro 7's $1.99. USPSTF Prevention TaskForce also leads on review sentiment (64% vs 41%) and update cadence (every 3 months vs every 9 months). The OB Wheel Pro 7's advantage is rating (4.0 vs 3.7) and iOS requirement (11.0 vs 18.0). On ads, 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

USPSTF Prevention TaskForce is free to download; The OB Wheel Pro 7 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

The OB Wheel Pro 7 holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: USPSTF Prevention TaskForce has 70 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 64% of USPSTF Prevention TaskForce's written reviews are positive against 41% of The OB Wheel Pro 7's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

USPSTF Prevention TaskForce ships an update every 3 months, The OB Wheel Pro 7 every 9 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

Scorecard7 real differences · 3 level
USPSTF Prevention TaskForce versus The OB Wheel Pro 7: the parameters behind the verdict, then further details
ParameterUSPSTF Prevention TaskForceThe OB Wheel Pro 7
PriceFree — better$1.99
Rating3.7 (70 ratings)4.0 (5 ratings) — better
Positive reviews64.1% of reviews — better41.2% of reviews
Number of ratings70 — better5
Update frequencyEvery 3 months — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS18.011.0 — better
Further details — not scored
Size15 MB1 MB
Age rating+44+
DeveloperAHRQDon Miller

Customer experience

USPSTF Prevention TaskForce

All ratings70 ratings
Positive62.9%
Neutral8.6%
Negative28.6%
Written reviews64 reviews
Positive64.1%
Neutral6.3%
Negative29.7%

The OB Wheel Pro 7

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews17 reviews
Positive41.2%
Neutral17.6%
Negative41.2%

Bugs and requests

USPSTF Prevention TaskForce

Reported bugs

9 issues
  • App crashes on startup
  • Recommendations are broken/inaccurate
  • App not compatible with recent iOS updates
  • Menu won't stay open
  • Unable to download
Show 4 more
  • Recommendations won't load
  • Non-functioning links
  • Does not filter correctly
  • Resets everything when going back to home page

Requested features

6 requests
  • Update recommendations
  • Add more units of measurement (kg/meters)
  • Update for dark mode
  • Improve UI/UX
  • Add more diseases to profile
Show 1 more
  • Faster loading times

The OB Wheel Pro 7

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

USPSTF Prevention TaskForce

No in-app purchases

None

The OB Wheel Pro 7

No in-app purchases

Questions

Is USPSTF Prevention TaskForce free?
USPSTF Prevention TaskForce is free to download, with no in-app purchases.
Is The OB Wheel Pro 7 free?
The OB Wheel Pro 7 costs $1.99, with no in-app purchases.
Which has better reviews, USPSTF Prevention TaskForce or The OB Wheel Pro 7?
The OB Wheel Pro 7 is rated higher. USPSTF Prevention TaskForce averages 3.7 out of 5 from 70 ratings, while The OB Wheel Pro 7 averages 4.0 from 5 ratings.
Do USPSTF Prevention TaskForce or The OB Wheel Pro 7 have ads?
Neither USPSTF Prevention TaskForce nor The OB Wheel Pro 7 shows ads.
Which is updated more often, USPSTF Prevention TaskForce or The OB Wheel Pro 7?
USPSTF Prevention TaskForce ships an update every 3 months, and The OB Wheel Pro 7 every 9 months. Most recently, USPSTF Prevention TaskForce was updated on October 23, 2026 and The OB Wheel Pro 7 on October 26, 2026.

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