# EMS Protocols To vs EMS Protocol Reference

The clearest difference is device support: EMS Protocols To at 3 against EMS Protocol Reference's 1. EMS Protocols To also leads on iOS requirement (13.0 vs 18.0). 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.

EMS Protocols To ships an update every 4 months, EMS Protocol Reference every 3 months. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | EMS Protocols To | EMS Protocol Reference |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Size | 28 MB | 20 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [EMS Dev Solutions, LLC](https://appshunter.io/developer/1746050681) | [RespondersAI LLC](https://appshunter.io/developer/1818178681) |

## What reviewers say

### EMS Protocols To

[App page](https://appshunter.io/ios/app/ems-protocols-to-go-field-use/id6746938540)

**Features:** macOS Compatibility

**In-app purchases:** none


### EMS Protocol Reference

[App page](https://appshunter.io/ios/app/ems-protocol-reference/id6761344731)

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

**In-app purchases:** none


## Frequently asked questions

### Is EMS Protocols To free?

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

### Is EMS Protocol Reference free?

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

### Do EMS Protocols To or EMS Protocol Reference have ads?

Neither EMS Protocols To nor EMS Protocol Reference shows ads.

### Which is updated more often, EMS Protocols To or EMS Protocol Reference?

EMS Protocols To ships an update every 4 months, and EMS Protocol Reference every 3 months. Most recently, EMS Protocols To was updated on October 6, 2026 and EMS Protocol Reference on October 14, 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.*