# CDC vs Vaxx

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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.

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

## The numbers

| Metric | CDC | Vaxx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (413 ratings)](https://appshunter.io/ios/app/cdc/id487847188/reviews) | **[3.8 (55 ratings)](https://appshunter.io/ios/app/vaxx/id1580848435/reviews)** |
| Number of ratings | **413** | 55 |
| Positive reviews | 22.5% of reviews | **58.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | Free |
| Size | 38 MB | 27 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) | [DittoLive Incorporated](https://appshunter.io/developer/1449905934) |

## What reviewers say

### CDC

[App page](https://appshunter.io/ios/app/cdc/id487847188)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Informative and reliable health information
- 🚀 Easy to navigate and access data
- 👍 Useful for public health professionals and students

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- ⚠️ Outdated or inaccurate information, especially regarding COVID-19
- 🔒 Privacy and security concerns
- 👎 Lack of trust in the CDC due to political influence

**Reported bugs**

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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/vaxx/id1580848435)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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.

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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.*