Comparison

CDC vs Vaxx

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

Head to head
About

CDC

Access the latest health information and news directly from the official source. Organize your home screen to prioritize what matters most and receive real-time updates. Explore a variety of content including disease data, videos, podcasts, and journal articles.

Highlights
  • Up-to-date health information
  • Customizable home screen
  • Disease case counts
  • Videos and podcasts
  • Journal articles
  • Searchable web content
Features
Read full description

Get the official CDC Mobile application to access the most up to date health information. FILTERING OPTIONS Organize your home screen so that the information that’s most important to you appears first! Turn off the content you don’t want with just a flip of a switch and reset it all with the tap of a button. CONTENT The app ensures that you’re getting the most up to date health information. The home screen lets you see all your information in one place and updates whenever your device is connected to WI-FI. Enjoy a greater variety of content such as Image of the Week, disease case counts, videos, and podcasts to give you the most current health information from CDC. Browse the latest articles, stay on top of health news in the Newsroom section, and view CDC Images of the Week. If you’re a journal reader, view the latest Morbidity & Mortality Weekly Report, Emerging and Infectious Disease journal, or the latest on Preventing Chronic Diseases. You can even search CDC’s web content from the app. We'd love to hear your thoughts about the app! Rate the CDC Mobile App in the App Store or leave a comment to let us know how we're doing. You can even send us an email through the app if you have suggestions for improvements! DISCLAIMER THE MATERIALS EMBODIED IN THIS SOFTWARE ARE PROVIDED TO YOU "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESSED, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE CENTERS FOR DISEASE CONTROL AND PREVENTION (CDC) OR THE UNITED STATES (U.S.) GOVERNMENT BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR NOT CDC OR THE U.S. GOVERNMENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.

About

Vaxx

Easily access and display digital images of your vaccination cards for quick verification at various venues. Securely store multiple cards, including family members', without uploading them online. Zoom in on details and manage your stored images efficiently.

Highlights
  • Store front and back of vaccination cards
  • Add multiple vaccination cards
  • Offline access to stored images
  • Zoom functionality for text
  • Edit and reorder images
Features
Read full description

Vaxx is a simple app that allows you to quickly pull up an image of your vaccination card to show at restaurants, entertainment venues, work, and more. Keep your physical vaccination card safe at home. Stop wasting time scrolling through your photo library, emails, or drives for a picture of your vaccination card. Notable features: - Add front and back images of your vaccination cards - Add more cards if needed (great for adding your family members' scans!) - Completely private, the image is never uploaded anywhere - Allow zooming in of the card for hard to read text - Delete and reorder images by clicking the edit button

Screenshots

CDC4 screens
Vaxx4 screens

Verdict

The call

The clearest difference is rating: Vaxx at 3.8 against CDC's 2.9. Vaxx also leads on review sentiment (58% vs 22%) and update cadence (every 3 days vs monthly). CDC's advantage is ratings volume (413 vs 55). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Vaxx holds the better App Store score, 3.8 against 2.9. That said, the two scores are not equally well evidenced: CDC has 413 ratings behind it against 55, so its average is the more settled of the two. Written reviews point the same way: 22% of CDC's written reviews are positive against 58% of Vaxx's.

UpkeepUpdate frequency

CDC ships an update monthly, Vaxx every 3 days. Both last shipped on September 15, 2026.

Scorecard4 real differences · 6 level
CDC versus Vaxx: the parameters behind the verdict, then further details
ParameterCDCVaxx
PriceFreeFree
Rating2.9 (413 ratings)3.8 (55 ratings) — better
Positive reviews22.5% of reviews58.3% of reviews — better
Number of ratings413 — better55
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size38 MB27 MB
Age rating12+4+
DeveloperCenters For Disease Control and PreventionDittoLive Incorporated

Customer experience

CDC

All ratings413 ratings
Positive45.0%
Neutral5.6%
Negative49.4%
Written reviews89 reviews
Positive22.5%
Neutral10.1%
Negative67.4%

Vaxx

All ratings55 ratings
Positive65.5%
Neutral10.9%
Negative23.6%
Written reviews12 reviews
Positive58.3%
Neutral16.7%
Negative25.0%

Bugs and requests

CDC

Reported bugs

3 issues
  • Links within articles not working
  • App freezing or not loading past the splash screen
  • Symptom checker and other features not functioning properly

Requested features

4 requests
  • Improved contact tracing tools
  • More up-to-date and comprehensive disease data
  • Better integration with other health apps and platforms
  • Landscape mode support for tablets

Vaxx

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

CDC

No in-app purchases

None

Vaxx

No in-app purchases

Questions

Is CDC free?
CDC is free to download, with no in-app purchases.
Is Vaxx free?
Vaxx is free to download, with no in-app purchases.
Which has better reviews, CDC or Vaxx?
Vaxx is rated higher. CDC averages 2.9 out of 5 from 413 ratings, while Vaxx averages 3.8 from 55 ratings.
Do CDC or Vaxx have ads?
Neither CDC nor Vaxx shows ads.
Which is updated more often, CDC or Vaxx?
CDC ships an update monthly, and Vaxx every 3 days. Most recently, CDC was updated on September 15, 2026 and Vaxx on September 15, 2026.

Other comparisons