# MQTTool vs ATS MQTT Client

The clearest difference is review sentiment: MQTTool at 77% against ATS MQTT Client's 0%. MQTTool also leads on rating (4.3 vs 3.0) and update cadence (every 4 weeks vs every 7 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.

MQTTool holds the better App Store score, 4.3 against 3.0. That said, the two scores are not equally well evidenced: MQTTool has 26 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 77% of MQTTool's written reviews are positive against 0% of ATS MQTT Client's.

MQTTool ships an update every 4 weeks, ATS MQTT Client every 7 months. The most recent releases landed on October 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | MQTTool | ATS MQTT Client |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (26 ratings)](https://appshunter.io/ios/app/mqttool/id1085976398/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/ats-mqtt-client/id1485411018/reviews) |
| Number of ratings | **26** | 2 |
| Positive reviews | **76.9% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 7 months |
| Monetization | Free | Free |
| Size | 18 MB | 5 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brent Petit](https://appshunter.io/developer/1085976397) | [ATS sp.j.](https://appshunter.io/developer/1485411017) |

## What reviewers say

### MQTTool

[App page](https://appshunter.io/ios/app/mqttool/id1085976398)

This application serves as an MQTT client and testing tool. It allows users to connect to MQTT brokers, subscribe to message topics, and publish messages, making it ideal for IoT and machine-to-machine communication testing.

**Highlights:** MQTT client functionality, Connect to authenticated brokers, Connect to unauthenticated brokers, Subscribe to topics, Publish messages to topics, IoT application testing

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is MQTTool free?

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

### Is ATS MQTT Client free?

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

### Which has better reviews, MQTTool or ATS MQTT Client?

MQTTool is rated higher. MQTTool averages 4.3 out of 5 from 26 ratings, while ATS MQTT Client averages 3.0 from 2 ratings.

### Do MQTTool or ATS MQTT Client have ads?

Neither MQTTool nor ATS MQTT Client shows ads.

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

MQTTool ships an update every 4 weeks, and ATS MQTT Client every 7 months. Most recently, MQTTool was updated on October 24, 2026 and ATS MQTT Client on September 25, 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.*