39Tools vs MQTT Checker
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
39Tools
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39Tools is a application that integrates SSH,MYSQL,TCP,UDP,MQTT,BLE,Video and other debugging tools.
MQTT Checker
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MQTT Checker is an amazingly simple application that quickly checks MQTT connections. This app helps users swiftly verify their ability to connect to MQTT servers. Users can easily input essential information such as ServerUrl or IP and ServerPort, and optionally configure ClientID, Broker Name, Topic, and Message. Key Features: Swift MQTT Server Connection Verification: MQTT Checker swiftly confirms the ability to connect to MQTT servers by allowing users to input ServerUrl or IP and ServerPort through a user-friendly interface. Additional Configuration Options: Optionally set ClientID, Broker Name, Topic, and Message to tailor MQTT connection tests to your preferences. Concise Notifications: Upon successful connection to the MQTT server, clear and concise notifications inform users. Error Messages on Failure: In case of failed MQTT server connections, display error messages to quickly identify issues.
Screenshots
Verdict
The clearest difference is update cadence: MQTT Checker at monthly against 39Tools's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
39Tools ships an update every 9 months, MQTT Checker monthly. The most recent releases landed on October 27, 2026 and October 12, 2026 respectively.
| Parameter | 39Tools | MQTT Checker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Monthly โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details โ not scored | ||
| Size | 112 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | ็ญ ็ | DreamNexus |
In-app purchases
39Tools
No in-app purchases
MQTT Checker
No in-app purchases









