# Responder vs storm MTA

The clearest difference is review sentiment: Responder at 38% against storm MTA's 0%. Responder also leads on iOS requirement (13.0 vs 15.0). storm MTA's advantage is update cadence (every 3 weeks vs every 8 months). 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.

Responder ships an update every 8 months, storm MTA every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Responder | storm MTA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/storm-mta/id1608026892/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **37.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 32 MB | 75 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PageOne Communications Ltd](https://appshunter.io/developer/562917459) | [Redwood Tech](https://appshunter.io/developer/1608026894) |

## What reviewers say

### Responder

[App page](https://appshunter.io/ios/app/responder/id563249043)

This secure messaging app provides a closed user-group communication platform for businesses. It offers features like priority alerts, status updates, and location reporting to enhance worker management and emergency response.

**Highlights:** Secure 2-way closed user group messaging, Priority alert messaging, Repeated alerts for missed messages, Status updates, Location reporting, Integration with PageOne Connect/Flare, API gateway integration

**Features:** macOS Compatibility

**In-app purchases:** none


### storm MTA

[App page](https://appshunter.io/ios/app/storm-mta/id1608026892)

This mobile application allows contact center agents to make and receive calls from their iOS devices while on the go. It enables flexible working by connecting agents via Wi-Fi or mobile data, eliminating call forwarding charges and allowing them to work from anywhere.

**Highlights:** Make and receive calls on iOS devices, Connect via Wi-Fi or mobile data, Eliminate call forwarding charges, Work flexibly from any location, Interchangeable use of PC and mobile device

**In-app purchases:** none


## Frequently asked questions

### Is Responder free?

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

### Is storm MTA free?

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

### Do Responder or storm MTA have ads?

Neither Responder nor storm MTA shows ads.

### Which is updated more often, Responder or storm MTA?

Responder ships an update every 8 months, and storm MTA every 3 weeks. Most recently, Responder was updated on November 1, 2026 and storm MTA 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.*