# STI Tx Guide vs iPrenatal

The clearest difference is review sentiment: iPrenatal at 100% against STI Tx Guide's 36%. iPrenatal also leads on rating (5.0 vs 3.5). STI Tx Guide's advantage is iOS requirement (15.0 vs 17.6). On price, ratings volume, update cadence and ads there is nothing between them.

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

iPrenatal holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 36 and 26 respectively. Written reviews point the same way: 36% of STI Tx Guide's written reviews are positive against 100% of iPrenatal's.

STI Tx Guide ships an update every 2 months, iPrenatal every 4 months. The most recent releases landed on August 28, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | STI Tx Guide | iPrenatal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (36 ratings)](https://appshunter.io/ios/app/sti-tx-guide/id655206856/reviews) | **[5.0 (26 ratings)](https://appshunter.io/ios/app/iprenatal/id1522585839/reviews)** |
| Number of ratings | **36** | 26 |
| Positive reviews | 35.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 36 MB | 26 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) | [F. Hoffmann-La Roche](https://appshunter.io/developer/451131453) |

## 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


### iPrenatal

[App page](https://appshunter.io/ios/app/iprenatal/id1522585839)

This app provides clear, easy-to-understand information about prenatal genetic testing, including chromosomes, conditions, and testing options like NIPT. Developed by medical specialists, it aims to help users have more informed discussions with their doctors.

**Highlights:** Prenatal genetic testing information, Explanation of chromosomes and conditions, Details on NIPT and other testing options, Patient-friendly conversational language, Multimedia experience with videos and illustrations, Customizable audio narration

**Features:** macOS Compatibility

**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 iPrenatal free?

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

### Which has better reviews, STI Tx Guide or iPrenatal?

iPrenatal is rated higher. STI Tx Guide averages 3.5 out of 5 from 36 ratings, while iPrenatal averages 5.0 from 26 ratings.

### Do STI Tx Guide or iPrenatal have ads?

Neither STI Tx Guide nor iPrenatal shows ads.

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

STI Tx Guide ships an update every 2 months, and iPrenatal every 4 months. Most recently, STI Tx Guide was updated on August 28, 2026 and iPrenatal on September 17, 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.*