# Antibiograms vs CDC Yellow Book

The clearest difference is rating: CDC Yellow Book at 4.2 against Antibiograms's 1.0. CDC Yellow Book also leads on ratings volume (69 vs 1) and review sentiment (20% vs 0%). Antibiograms's advantage is in-app purchases (none vs 2) and update cadence (every 4 months vs every 21 months). On price, ads and device support there is nothing between them.

Both are free to download. CDC Yellow Book sells 1 one-off in-app purchase. Antibiograms asks for nothing beyond the download.

CDC Yellow Book holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: CDC Yellow Book has 69 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Antibiograms's written reviews are positive against 20% of CDC Yellow Book's.

Antibiograms ships an update every 4 months, CDC Yellow Book every 21 months. The most recent releases landed on October 12, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Antibiograms | CDC Yellow Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/antibiograms/id606986316/reviews) | **[4.2 (69 ratings)](https://appshunter.io/ios/app/cdc-yellow-book/id1235766820/reviews)** |
| Number of ratings | 1 | **69** |
| Positive reviews | 0.0% of reviews | **20.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 21 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 10 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Portable Databases](https://appshunter.io/developer/333398128) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Antibiograms

[App page](https://appshunter.io/ios/app/antibiograms/id606986316)

This app provides healthcare professionals with local antibiotic susceptibility data to guide empirical treatment of infections. Users can select bacteria and patient groups to view antibiotic effectiveness based on local laboratory testing.

**Highlights:** Local susceptibility patterns, Select bacterium and patient group, View antibiotic effectiveness, Download and switch databases, Customizable drug/organism fields, Distribute databases via email

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### CDC Yellow Book

[App page](https://appshunter.io/ios/app/cdc-yellow-book/id1235766820)

Access the U.S. government's most current travel health guidelines, including vaccine recommendations and destination-specific advice. This app offers comprehensive information for staying healthy abroad, with features like search, notes, and favorites.

**Highlights:** Pre-travel vaccinations and preventative care, Destination-specific guidelines, Advice for travelers with specific health needs, Full text search, Custom notes and highlights, Reference maps, tables, and charts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CDC Yellow Book | $29.99 | one-time |


## Frequently asked questions

### Is Antibiograms free?

Antibiograms is free to download, with no in-app purchases.

### Is CDC Yellow Book free?

CDC Yellow Book is free to download, with in-app purchases available.

### Which has better reviews, Antibiograms or CDC Yellow Book?

CDC Yellow Book is rated higher. Antibiograms averages 1.0 out of 5 from 1 ratings, while CDC Yellow Book averages 4.2 from 69 ratings.

### Do Antibiograms or CDC Yellow Book have ads?

Neither Antibiograms nor CDC Yellow Book shows ads.

### Which is updated more often, Antibiograms or CDC Yellow Book?

Antibiograms ships an update every 4 months, and CDC Yellow Book every 21 months. Most recently, Antibiograms was updated on October 12, 2026 and CDC Yellow Book on October 22, 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.*