AHS EMS vs CritiCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AHS EMS
Access essential Alberta Health Services Medical Control Protocols for pre-hospital emergency medical providers. Includes adult and pediatric algorithms, reference materials, and pharmacology information.
- Alberta Health Services Protocols
- Medical Control
- Medical First Response
- Incident Response
- Adult and pediatric algorithms
- Reference material
- Pharmacology information
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The Alberta Emergency Medical Services Medical Control Protocols app for iOS devices provides emergency medical providers access to easy-to-use Alberta Health Services Protocols (Medical Control, Medical First Response, Incident Response and Critical Care Medical Control) specifically designed for use in the pre-hospital environment. This app includes adult and pediatric algorithms as well as necessary reference material and pharmacology information, including infusion charts, resource information, and provincial contacts. This app provides government-related information (from Alberta Health Services Emergency Medical Services at https://www.albertahealthservices.ca/ems/ems.aspx) that is generated and published from AHSEMS.com (https://www.ahsems.com). App information is also publicly available at https://protocols.ahsems.com.
CritiCalc
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Simple tool for calculating a variety of transport medicine problems. This is not a tool for self-diagnosis and is meant to aid medical professionals that have been trained in these tools. Please seek medical help from a doctor as these tools in isolation are insufficient to provide medical advice. If you are a medical provider, please cross reference local policies, protocols, and training. No guarantee is provided to the accuracy of these tools.
Screenshots
Verdict
The clearest difference is update cadence: CritiCalc at every 2 weeks against AHS EMS's every 11 months. AHS EMS's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, CritiCalc every 2 weeks. The most recent releases landed on September 20, 2026 and September 13, 2026 respectively.
| Parameter | AHS EMS | CritiCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 34.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 11 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 28 MB | 53 MB |
| Age rating | 17+ | 17+ |
| Developer | The Essential Talk Network Incorporated | Jason Richmond |
In-app purchases
AHS EMS
No in-app purchases
CritiCalc
No in-app purchases









