# CDC Yellow Book vs Georgia TB Reference Guide

The clearest difference is review sentiment: Georgia TB Reference Guide at 100% against CDC Yellow Book's 20%. Georgia TB Reference Guide also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 2). CDC Yellow Book's advantage is ratings volume (69 vs 10). On price, ads, device support and iOS requirement there is nothing between them.

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

Georgia TB Reference Guide holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: CDC Yellow Book has 69 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 20% of CDC Yellow Book's written reviews are positive against 100% of Georgia TB Reference Guide's.

CDC Yellow Book ships an update every 21 months, Georgia TB Reference Guide every 6 weeks. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | CDC Yellow Book | Georgia TB Reference Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (69 ratings)](https://appshunter.io/ios/app/cdc-yellow-book/id1235766820/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/georgia-tb-reference-guide/id1583294462/reviews)** |
| Number of ratings | **69** | 10 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 32 MB |
| Requires iOS | 15.0 | **14.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) | [Emory University](https://appshunter.io/developer/387102326) |

## What reviewers say

### 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 |


### Georgia TB Reference Guide

[App page](https://appshunter.io/ios/app/georgia-tb-reference-guide/id1583294462)

Access evidence-based tuberculosis guidance for quick clinical decision-making. This app transforms established TB standards into a searchable, digital experience, helping healthcare professionals focus on patient care.

**Highlights:** Evidence-based TB guidance, Searchable digital experience, Clinical decision support, TB infection, disease, and control information, Developed with expert input

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CDC Yellow Book free?

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

### Is Georgia TB Reference Guide free?

Georgia TB Reference Guide is free to download, with no in-app purchases.

### Which has better reviews, CDC Yellow Book or Georgia TB Reference Guide?

Georgia TB Reference Guide is rated higher. CDC Yellow Book averages 4.2 out of 5 from 69 ratings, while Georgia TB Reference Guide averages 5.0 from 10 ratings.

### Do CDC Yellow Book or Georgia TB Reference Guide have ads?

Neither CDC Yellow Book nor Georgia TB Reference Guide shows ads.

### Which is updated more often, CDC Yellow Book or Georgia TB Reference Guide?

CDC Yellow Book ships an update every 21 months, and Georgia TB Reference Guide every 6 weeks. Most recently, CDC Yellow Book was updated on October 22, 2026 and Georgia TB Reference Guide on October 21, 2026.

---

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