# STI Tx Guide vs TherapySelector

The clearest difference is rating: STI Tx Guide at 3.5 against TherapySelector's 3.0. STI Tx Guide also leads on ratings volume (36 vs 2). TherapySelector's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

STI Tx Guide holds the better App Store score, 3.5 against 3.0. 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.

STI Tx Guide ships an update every 2 months, TherapySelector every 3 months. The most recent releases landed on August 28, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | STI Tx Guide | TherapySelector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (36 ratings)](https://appshunter.io/ios/app/sti-tx-guide/id655206856/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/therapyselector/id1168952597/reviews) |
| Number of ratings | **36** | 2 |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 36 MB | 26 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) | [TherapySelector B.V.](https://appshunter.io/developer/1532050287) |

## 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


### TherapySelector

[App page](https://appshunter.io/ios/app/therapyselector/id1168952597)

This app assists physicians in selecting personalized treatment plans for hypertension and hepatitis C. It analyzes patient data to provide information on medication effectiveness, adverse events, and costs, supporting informed decisions during consultations.

**Highlights:** Patient profile determination based on 4 questions, Medication effectiveness and adverse event probability, Treatment cost information, Hypertension therapy options (THZ, CCA, ACEi, ARB), Monotherapy and stepwise addition guidance, Available in English and Dutch

**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 TherapySelector free?

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

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

STI Tx Guide is rated higher. STI Tx Guide averages 3.5 out of 5 from 36 ratings, while TherapySelector averages 3.0 from 2 ratings.

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

Neither STI Tx Guide nor TherapySelector shows ads.

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

STI Tx Guide ships an update every 2 months, and TherapySelector every 3 months. Most recently, STI Tx Guide was updated on August 28, 2026 and TherapySelector on September 23, 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.*