# ATS MQTT Client vs Sec MQTT Pub

The clearest difference is rating: Sec MQTT Pub at 5.0 against ATS MQTT Client's 3.0. ATS MQTT Client's advantage is update cadence (every 7 months vs every 28 months). On price, ratings volume, 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.

Sec MQTT Pub holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

ATS MQTT Client ships an update every 7 months, Sec MQTT Pub every 28 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | ATS MQTT Client | Sec MQTT Pub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/ats-mqtt-client/id1485411018/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sec-mqtt-pub/id1554992163/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 28 months |
| Monetization | Free | Free |
| Size | 5 MB | 3 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ATS sp.j.](https://appshunter.io/developer/1485411017) | [Care Active Corp.](https://appshunter.io/developer/1739001802) |

## What reviewers say

### ATS MQTT Client

[App page](https://appshunter.io/ios/app/ats-mqtt-client/id1485411018)

Monitor and control devices connected to the mqtt.ats.pl service in real-time. Sign in with your account to access all your registered devices directly within the application.

**Highlights:** Real-time device monitoring, Device control, Integration with mqtt.ats.pl service, Account sign-in for device access, Supports iPhone, iPad, and iPod

**Features:** macOS Compatibility

**In-app purchases:** none


### Sec MQTT Pub

[App page](https://appshunter.io/ios/app/sec-mqtt-pub/id1554992163)

This app provides a secure MQTT client for communicating with IoT devices using X.509 authentication and AES-128 encryption. It allows for customized messages and topics, offering a robust solution for secure IoT project communication.

**Highlights:** X.509 authentication, Root CA authentication support, AES-128 encryption, Face ID / Touch ID support, Customizable buttons for messages and topics, Open-source project

**In-app purchases:** none


## Frequently asked questions

### Is ATS MQTT Client free?

ATS MQTT Client is free to download, with no in-app purchases.

### Is Sec MQTT Pub free?

Sec MQTT Pub is free to download, with no in-app purchases.

### Which has better reviews, ATS MQTT Client or Sec MQTT Pub?

Sec MQTT Pub is rated higher. ATS MQTT Client averages 3.0 out of 5 from 2 ratings, while Sec MQTT Pub averages 5.0 from 1 ratings.

### Do ATS MQTT Client or Sec MQTT Pub have ads?

Neither ATS MQTT Client nor Sec MQTT Pub shows ads.

### Which is updated more often, ATS MQTT Client or Sec MQTT Pub?

ATS MQTT Client ships an update every 7 months, and Sec MQTT Pub every 28 months. Most recently, ATS MQTT Client was updated on November 3, 2026 and Sec MQTT Pub 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.*