# PA EMS Protocols vs COSA

The clearest difference is price: COSA at Free against PA EMS Protocols's $4.99. COSA also leads on iOS requirement (11.0 vs 14.0). PA EMS Protocols's advantage is rating (4.7 vs 3.7) and ads (none vs shown). On ratings volume, update cadence, in-app purchases and device support there is nothing between them.

COSA is free to download; PA EMS Protocols costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PA EMS Protocols holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

PA EMS Protocols ships an update every 4 months, COSA every 3 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PA EMS Protocols | COSA |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/pa-ems-protocols/id1031755528/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/cosa-medication-information/id1626158440/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | **Ad-supported** |
| Best chart rank | **#65** | — |
| Size | 41 MB | 28 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Nathan Harig](https://appshunter.io/developer/1031755527) | [MEDICAL EDUCATION RESOURCES, LLC](https://appshunter.io/developer/1561046509) |

## What reviewers say

### PA EMS Protocols

[App page](https://appshunter.io/ios/app/pa-ems-protocols/id1031755528)

**Currently charting:** #65 Top Paid · Medical (US App Store)

This app provides emergency medical responders in Pennsylvania with the latest protocols and hospital data. It offers fast updates, search functionality, and access to state and regional information, including EMS bulletins and scope of practice.

**Highlights:** Latest protocols and hospital data, Fast content updates, Search functionality, Dark mode for night shifts, Access to PA Medic, State and regional information

**Features:** macOS Compatibility

**In-app purchases:** none


### COSA

[App page](https://appshunter.io/ios/app/cosa-medication-information/id1626158440)

Access essential drug information and advanced patient resources. This app provides a portion of licensed drug data from a leading healthcare information provider, based on industry-standard databases.

**Highlights:** Essential drug information, Advanced patient resources, Licensed drug data, Industry-standard databases, Physician-focused resources

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PA EMS Protocols free?

PA EMS Protocols costs $4.99, with no in-app purchases.

### Is COSA free?

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

### Which has better reviews, PA EMS Protocols or COSA?

PA EMS Protocols is rated higher. PA EMS Protocols averages 4.7 out of 5 from 7 ratings, while COSA averages 3.7 from 3 ratings.

### Do PA EMS Protocols or COSA have ads?

COSA shows ads; PA EMS Protocols does not.

### Which is updated more often, PA EMS Protocols or COSA?

PA EMS Protocols ships an update every 4 months, and COSA every 3 months. Most recently, PA EMS Protocols was updated on November 11, 2026 and COSA on November 3, 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.*