# EMS Calculator vs EMS Guidebook

The clearest difference is price: EMS Guidebook at Free against EMS Calculator's $0.99. EMS Guidebook also leads on rating (4.9 vs 1.8) and ratings volume (115 vs 4). EMS Calculator's advantage is in-app purchases (none vs 7) and iOS requirement (6.0 vs 15.0). On ads and device support there is nothing between them.

EMS Guidebook is free to download; EMS Calculator costs $0.99 up front. EMS Guidebook sells 7 one-off in-app purchases. EMS Calculator asks for nothing beyond the download.

EMS Guidebook holds the better App Store score, 4.9 against 1.8. That said, the two scores are not equally well evidenced: EMS Guidebook has 115 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of EMS Calculator's written reviews are positive against 33% of EMS Guidebook's.

EMS Calculator ships an update every 16 months, EMS Guidebook every 6 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | EMS Calculator | EMS Guidebook |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.8 (4 ratings)](https://appshunter.io/ios/app/ems-calculator/id504469704/reviews) | **[4.9 (115 ratings)](https://appshunter.io/ios/app/ems-guidebook/id527102213/reviews)** |
| Number of ratings | 4 | **115** |
| Positive reviews | 25.0% of reviews | **33.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 3 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Crystal Clear Solutions](https://appshunter.io/developer/444062170) | [Larry Owens](https://appshunter.io/developer/496138296) |

## What reviewers say

### EMS Calculator

[App page](https://appshunter.io/ios/app/ems-calculator/id504469704)

This medical app provides ultra-fast drug dosing calculations for pediatric and adult emergencies based on patient weight. It offers quick access to dosing ranges and specific infusion calculations, eliminating the need for extensive reference materials.

**Highlights:** Ultra-fast drug dosing, Pediatric and adult calculations, Weight-based dosing ranges, Nicardipine infusion calculator, One-page interface

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

**In-app purchases:** none


### EMS Guidebook

[App page](https://appshunter.io/ios/app/ems-guidebook/id527102213)

This app provides a digital reference for emergency medical service protocols, replacing traditional physical guidebooks. It includes essential medical charts, guidelines, and rhythm examples, with agency-specific protocols accessible via password.

**Highlights:** Digital EMS agency protocols, Replacement for physical guidebooks, Pediatric vital signs charts, Burn and c-spine clearance guides, Cardiac rhythm examples, AHA guidelines

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2009 Utah EMS for Children Off-Line Protocols | $1.99 | one-time |
| District 2B Protocols | $2.99 | one-time |
| 2009 West Virginia EMT Basic Protocols | $3.99 | one-time |
| 2012 North Carolina EMS Protocols | $4.99 | one-time |
| 2009 North Carolina EMS Protocols | $4.99 | one-time |
| 2010 Hawaii EMS Standing Orders | $4.99 | one-time |
| 2011-2013 St John New Zealand Protocols | $4.99 | one-time |


## Frequently asked questions

### Is EMS Calculator free?

EMS Calculator costs $0.99, with no in-app purchases.

### Is EMS Guidebook free?

EMS Guidebook is free to download, with in-app purchases available.

### Which has better reviews, EMS Calculator or EMS Guidebook?

EMS Guidebook is rated higher. EMS Calculator averages 1.8 out of 5 from 4 ratings, while EMS Guidebook averages 4.9 from 115 ratings.

### Do EMS Calculator or EMS Guidebook have ads?

Neither EMS Calculator nor EMS Guidebook shows ads.

### Which is updated more often, EMS Calculator or EMS Guidebook?

EMS Calculator ships an update every 16 months, and EMS Guidebook every 6 months. Most recently, EMS Calculator was updated on October 23, 2026 and EMS Guidebook on October 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.*