# AHS EMS vs CDN STBBI Guidelines

The clearest difference is review sentiment: CDN STBBI Guidelines at 100% against AHS EMS's 34%. CDN STBBI Guidelines also leads on update cadence (every 4 months vs every 11 months). 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.

AHS EMS ships an update every 11 months, CDN STBBI Guidelines every 4 months. The most recent releases landed on September 20, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | AHS EMS | CDN STBBI Guidelines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ahs-ems/id413312484/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 34.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 28 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [The Essential Talk Network Incorporated](https://appshunter.io/developer/357541284) | [Health Canada](https://appshunter.io/developer/408663392) |

## What reviewers say

### AHS EMS

[App page](https://appshunter.io/ios/app/ahs-ems/id413312484)

Access essential Alberta Health Services Medical Control Protocols for pre-hospital emergency medical providers. Includes adult and pediatric algorithms, reference materials, and pharmacology information.

**Highlights:** Alberta Health Services Protocols, Medical Control, Medical First Response, Incident Response, Adult and pediatric algorithms, Reference material, Pharmacology information

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

**In-app purchases:** none


### CDN STBBI Guidelines

[App page](https://appshunter.io/ios/app/cdn-stbbi-guidelines/id958263397)

This app offers Canadian health professionals current recommendations for screening, diagnosing, managing, and treating sexually transmitted infections (STIs). It's based on updated guidelines and complementary resources, focusing on uncomplicated STIs in adults and youth.

**Highlights:** STI screening recommendations, Diagnosis guidance, Management protocols, Treatment strategies, Antibiotic-resistant gonorrhea updates, Concise and easy-to-use format

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

**In-app purchases:** none


## Frequently asked questions

### Is AHS EMS free?

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

### Is CDN STBBI Guidelines free?

CDN STBBI Guidelines is free to download, with no in-app purchases.

### Do AHS EMS or CDN STBBI Guidelines have ads?

Neither AHS EMS nor CDN STBBI Guidelines shows ads.

### Which is updated more often, AHS EMS or CDN STBBI Guidelines?

AHS EMS ships an update every 11 months, and CDN STBBI Guidelines every 4 months. Most recently, AHS EMS was updated on September 20, 2026 and CDN STBBI Guidelines on June 5, 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.*