# STI Tx Guide vs Syphilis Tools

The clearest difference is review sentiment: Syphilis Tools at 100% against STI Tx Guide's 36%. Syphilis Tools also leads on rating (4.5 vs 3.5) and update cadence (every 11 days vs every 2 months). STI Tx Guide's advantage is ratings volume (36 vs 2). 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.

Syphilis Tools holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: STI Tx Guide has 36 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 36% of STI Tx Guide's written reviews are positive against 100% of Syphilis Tools's.

STI Tx Guide ships an update every 2 months, Syphilis Tools every 11 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | STI Tx Guide | Syphilis Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (36 ratings)](https://appshunter.io/ios/app/sti-tx-guide/id655206856/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/syphilis-tools/id6758426004/reviews)** |
| Number of ratings | **36** | 2 |
| Positive reviews | 35.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Free | Free |
| Size | 36 MB | 57 MB |
| Requires iOS | 15.0 | 15.0.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) | [University Of Washington](https://appshunter.io/developer/328228464) |

## What reviewers say

### STI Tx Guide

[App page](https://appshunter.io/ios/app/sti-tx-guide/id655206856)

Provides healthcare professionals with up-to-date, evidence-based recommendations for the prevention, diagnosis, and treatment of sexually transmitted infections. Features include clinical care guidance, sexual history resources, and patient materials for effective patient management.

**Highlights:** STI prevention recommendations, Diagnosis guidance, Treatment protocols, Clinical care assistance, Sexual history resources, Patient management tools

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

**In-app purchases:** none


### Syphilis Tools

[App page](https://appshunter.io/ios/app/syphilis-tools/id6758426004)

This medical reference app provides healthcare professionals and trainees with up-to-date information on diagnosing, treating, and preventing syphilis. It includes tools for screening, serologic testing, staging, treatment, monitoring, and partner management, all based on CDC guidelines.

**Highlights:** CDC STI Treatment Guidelines, Offline accessibility, Geographic Risk Tool, Serologic Testing Interpretation, Nontreponemal Titer Tool, Treatment Regimen Summaries, Partner Management Guidance

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

**In-app purchases:** none


## Frequently asked questions

### Is STI Tx Guide free?

STI Tx Guide is free to download, with no in-app purchases.

### Is Syphilis Tools free?

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

### Which has better reviews, STI Tx Guide or Syphilis Tools?

Syphilis Tools is rated higher. STI Tx Guide averages 3.5 out of 5 from 36 ratings, while Syphilis Tools averages 4.5 from 2 ratings.

### Do STI Tx Guide or Syphilis Tools have ads?

Neither STI Tx Guide nor Syphilis Tools shows ads.

### Which is updated more often, STI Tx Guide or Syphilis Tools?

STI Tx Guide ships an update every 2 months, and Syphilis Tools every 11 days. Most recently, STI Tx Guide was updated on October 17, 2026 and Syphilis Tools on October 16, 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.*