39Tools vs MQTT Debug & Analyzer Client
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 Debug & Analyzer Client
This utility helps IoT developers and network engineers debug, monitor, and analyze MQTT traffic. It offers advanced connectivity, full MQTT 5.0 support, and intuitive data visualization tools. Seamlessly integrates with major IoT platforms.
- Advanced connectivity (TCP, WebSockets, SSL/TLS)
- MQTT 5.0 protocol support
- Syntax highlighting for JSON, XML, text
- Hex view for binary data
- Real-time charts for numerical payloads
- Chat-style message history
- Broker compatibility with major platforms
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MQTT Debug & Analyzer Client is a professional utility designed for IoT developers, network engineers, and smart home enthusiasts. Debug, monitor, and analyze your MQTT traffic with ease. Key Features โข Advanced Connectivity: Support for TCP, WebSockets, and SSL/TLS (Certificates management included). โข Protocol Support: Fully compatible with MQTT 3.1.1 and the latest MQTT 5.0 features (User Properties, Shared Subscriptions). โข Data Visualization โข Syntax highlighting for JSON, XML, and plain text. โข Hex view for binary data inspection. โข Real-time charts for numerical payloads. โข Intuitive Interface: Chat-style message history makes tracking Publish/Subscribe flows simple. โข Broker Compatibility: Works seamlessly with EMQX, Mosquitto, HiveMQ, AWS IoT, Azure, and Google Cloud IoT. โข Supports dark mode and light mode โข Support for displaying replies in hexadecimal or plain text โข Support sending messages in hexadecimal format Why choose us? โข Reliable: Keeps background connections alive (where supported) for continuous monitoring. โข Flexible: Manage multiple broker profiles and switch between them instantly. โข Insights: Filter messages by topic or content to find exactly what you are looking for. Perfect for debugging Home Assistant setups, Tasmota devices, or industrial PLC data. MQTT Pro Subscriptions You can subscribe for MQTT Pro Subscriptions to all features and content offered for purchase within the app. MQTT Pro offers subscriptions. The subscription prices are: (i) Monthly Subscription ($0.99 / Month) (ii) Yearly Subscription ($2.99 / Year) You can subscribe to a Monthly Subscription plan ($0.99 billed once a month) or a Yearly Subscription plan ($2.99 billed once a year). Payment will be charged to iTunes Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. The prices are in US dollars. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Our app is functional without purchasing an Auto-Renewable subscription, and you can use all the unlocked content after the subscription expires. Q: How do I restore the subscriptions on new devices? A: You can tap the 'Restore' button on the subscription page. Privacy Policy: https://www.whalesgrowth.top/pp/ Terms of Service: https://www.whalesgrowth.top/tos/
Screenshots
Verdict
The clearest difference is in-app purchases: 39Tools at none against MQTT Debug & Analyzer Client's 3. 39Tools also leads on iOS requirement (12.0 vs 15.0). MQTT Debug & Analyzer Client's advantage is update cadence (every 3 weeks vs every 9 months). On price, ads 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. MQTT Debug & Analyzer Client sells 3 in-app purchases, starting at $2.99 per month. 39Tools asks for nothing beyond the download.
39Tools ships an update every 9 months, MQTT Debug & Analyzer Client every 3 weeks. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.
| Parameter | 39Tools | MQTT Debug & Analyzer Client |
|---|---|---|
| Price | Free | Free |
| Positive reviews | โ | 50.0% of reviews |
| Update frequency | Every 9 months | Every 3 weeks โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | โ | Subscription |
| Devices | iPhone, iPod | iPhone, iPad, iPod โ better |
| Requires iOS | 12.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 112 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | ็ญ ็ | ๅฐ็ฒ ็ |
In-app purchases
39Tools
No in-app purchases
MQTT Debug & Analyzer Client
- MQTT Month Pro$2.991 Month
- MQTT Yearly Pro$4.991 Year
- MQTT Lifetime Pro$5.99
Questions
Is 39Tools free?
Is MQTT Debug & Analyzer Client free?
Do 39Tools or MQTT Debug & Analyzer Client have ads?
Which is updated more often, 39Tools or MQTT Debug & Analyzer Client?
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