# ZOLL Respond vs MEMS Protocols

The clearest difference is update cadence: ZOLL Respond at every 5 weeks against MEMS Protocols's every 14 months. ZOLL Respond also leads on rating (3.4 vs 3.0) and ratings volume (30 vs 3). 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.

ZOLL Respond holds the better App Store score, 3.4 against 3.0. That said, the two scores are not equally well evidenced: ZOLL Respond has 30 ratings behind it against 3, so its average is the more settled of the two.

ZOLL Respond ships an update every 5 weeks, MEMS Protocols every 14 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ZOLL Respond | MEMS Protocols |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (30 ratings)](https://appshunter.io/ios/app/zoll-respond/id1413655274/reviews)** | [3.0 (3 ratings)](https://appshunter.io/ios/app/mems-protocols/id6466106149/reviews) |
| Number of ratings | **30** | 3 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 14 months |
| Monetization | Free | Free |
| Size | 135 MB | 27 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ZOLL Data Systems, Inc.](https://appshunter.io/developer/385812404) | [Acid Remap LLC](https://appshunter.io/developer/323130617) |

## What reviewers say

### ZOLL Respond

[App page](https://appshunter.io/ios/app/zoll-respond/id1413655274)

This application enables response crews, dispatchers, and medical facilities to view and manage their trips. It provides navigation to pick-up and drop-off locations for existing customers.

**Highlights:** View and respond to trips, Navigate to pick-up points, Navigate to drop-off points, Manage response crew activities, Coordinate with dispatchers, Connect medical facilities

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

**In-app purchases:** none


### MEMS Protocols

[App page](https://appshunter.io/ios/app/mems-protocols/id6466106149)

Access Metro EMS protocols and supporting materials offline on your mobile device. Quickly find information with indexed lookup and search functionality. Save important entries to favorites and add custom notes for easy reference.

**Highlights:** Offline access to protocols, Quick indexed lookup, Search titles and text, Favorites tab, Customizable notes, Regular updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZOLL Respond free?

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

### Is MEMS Protocols free?

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

### Which has better reviews, ZOLL Respond or MEMS Protocols?

ZOLL Respond is rated higher. ZOLL Respond averages 3.4 out of 5 from 30 ratings, while MEMS Protocols averages 3.0 from 3 ratings.

### Do ZOLL Respond or MEMS Protocols have ads?

Neither ZOLL Respond nor MEMS Protocols shows ads.

### Which is updated more often, ZOLL Respond or MEMS Protocols?

ZOLL Respond ships an update every 5 weeks, and MEMS Protocols every 14 months. Most recently, ZOLL Respond was updated on October 13, 2026 and MEMS Protocols 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.*