Comparison

USPSTF Prevention TaskForce vs Snellen test

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

Snellen test

This app uses augmented reality to display a Snellen eye chart for visual acuity testing. It allows users to adjust the chart's size and position from a distance, simulating a professional eye exam. Ideal for quick vision checks at home.

Highlights
  • Augmented reality Snellen chart
  • Adjustable chart size and position
  • Remote control via device camera
  • Distance simulation for testing
  • Customizable display options
Features
Read full description

The Snellen chart is a widely used tool for measuring visual acuity. Named after the Dutch ophthalmologist Herman Snellen, who created it in 1862, this chart helps assess eyesight. To get started, choose a vertical surface to display the chart, stand 6 meters away, and aim your device’s rear camera at the surface. Once the chart loads, you can adjust its position and size via the control panel or directly on the screen using drag-and-drop, rotate with two fingers, or zoom in/out gestures. Need to switch surfaces? Just tap the button with the two circular arrows. You can also mute the sound or hide help texts using the appropriate buttons.

Screenshots

USPSTF Prevention TaskForce4 screens
Snellen test4 screens

Verdict

The call

The clearest difference is review sentiment: USPSTF Prevention TaskForce at 63% against Snellen test's 0%. USPSTF Prevention TaskForce also leads on price (Free vs $0.99). Snellen test's advantage is iOS requirement (13.2 vs 18.0). On update cadence, 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; Snellen test costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

USPSTF Prevention TaskForce ships an update every 3 months, Snellen test every 4 months. The most recent releases landed on September 7, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 6 level
USPSTF Prevention TaskForce versus Snellen test: the parameters behind the verdict, then further details
ParameterUSPSTF Prevention TaskForceSnellen test
PriceFree — better$0.99
Rating3.6 (68 ratings) — better—
Positive reviews63.5% of reviews — better0.0% of reviews
Number of ratings68 — better—
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.013.2 — better
Further details — not scored
Size13 MB3 MB
Age rating4+4+
DeveloperAHRQOleg Drobyshev

Customer experience

USPSTF Prevention TaskForce

All ratings68 ratings
Positive61.8%
Neutral8.8%
Negative29.4%
Written reviews63 reviews
Positive63.5%
Neutral6.3%
Negative30.2%

Snellen test

Written reviews4 reviews
Positive0.0%
Neutral25.0%
Negative75.0%

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

Snellen test

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

USPSTF Prevention TaskForce

No in-app purchases

None

Snellen test

No in-app purchases

Questions

Is USPSTF Prevention TaskForce free?
USPSTF Prevention TaskForce is free to download, with no in-app purchases.
Is Snellen test free?
Snellen test costs $0.99, with no in-app purchases.
Do USPSTF Prevention TaskForce or Snellen test have ads?
Neither USPSTF Prevention TaskForce nor Snellen test shows ads.
Which is updated more often, USPSTF Prevention TaskForce or Snellen test?
USPSTF Prevention TaskForce ships an update every 3 months, and Snellen test every 4 months. Most recently, USPSTF Prevention TaskForce was updated on September 7, 2026 and Snellen test on September 9, 2026.

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