# USPSTF Prevention TaskForce vs Snellen test

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.

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.

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.

## The numbers

| Metric | USPSTF Prevention TaskForce | Snellen test |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.6 (68 ratings)](https://appshunter.io/ios/app/uspstf-prevention-taskforce/id311852560/reviews)** | — |
| Number of ratings | **68** | — |
| Positive reviews | **63.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | **Free** | Paid |
| Size | 13 MB | 3 MB |
| Requires iOS | 18.0 | **13.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AHRQ](https://appshunter.io/developer/311852563) | [Oleg Drobyshev](https://appshunter.io/developer/607614659) |

## What reviewers say

### USPSTF Prevention TaskForce

[App page](https://appshunter.io/ios/app/uspstf-prevention-taskforce/id311852560)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Essential for primary care
- 👍 Great evidence-based resource
- 👍 Useful for students and clinicians
- 👍 Well-organized and easy to use
- 👍 Quick reference tool

**What reviewers complain about**

- 🐛 Frequent crashes
- 🐛 Outdated recommendations
- 🐛 Inaccurate/broken recommendations
- 🐛 UI needs update
- 🐛 Not working with latest iOS

**Reported bugs**

- App crashes on startup
- Recommendations are broken/inaccurate
- App not compatible with recent iOS updates
- Menu won't stay open
- Unable to download

**Requested features**

- Update recommendations
- Add more units of measurement (kg/meters)
- Update for dark mode
- Improve UI/UX
- Add more diseases to profile


### Snellen test

[App page](https://appshunter.io/ios/app/snellen-test/id1514134289)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*