MQTTool vs ATS MQTT Client
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MQTTool
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.
- MQTT client functionality
- Connect to authenticated brokers
- Connect to unauthenticated brokers
- Subscribe to topics
- Publish messages to topics
- IoT application testing
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This is an MQTT client and test tool. MQTT is a machine-to-machine (M2M) messaging protocol commonly used for IoT applications. For more information on MQTT visit http://mqtt.org MQTTool can connect to authenticated and unauthenticated MQTT brokers, subscribe to topics, and publish messages to topics. I built this tool as i was doing my own MQTT investigations and I've posted it hoping others would find it useful too. I continue to use it on projects, and I'm continuing to look to improve this tool. If there are changes that would make this more useful, please send me feedback. Thanks!
ATS MQTT Client
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.
- Real-time device monitoring
- Device control
- Integration with mqtt.ats.pl service
- Account sign-in for device access
- Supports iPhone, iPad, and iPod
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Application dedicated for mqtt.ats.pl service. It allows users to monitor their devices, connected with Service, and also to control them in real-time. Thanks to integration with Service all user has to do is sign in with their account and all their devices will be available inside app.
Screenshots
Verdict
The clearest difference is review sentiment: MQTTool at 76% 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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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: 76% 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 June 10, 2026 and September 9, 2026 respectively.
| Parameter | MQTTool | ATS MQTT Client |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (26 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 75.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 26 — better | 2 |
| Update frequency | Every 4 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 18 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Brent Petit | ATS sp.j. |
Customer experience
MQTTool
ATS MQTT Client
In-app purchases
MQTTool
No in-app purchases
ATS MQTT Client
No in-app purchases
