Comparison

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.

Head to head
About

39Tools

Features
Read full description

39Tools is a application that integrates SSH,MYSQL,TCP,UDP,MQTT,BLE,Video and other debugging tools.

About

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.

Highlights
  • 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
Features
Read full description

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 โ€ข Advanced Connectivity: Support for TCP, WebSockets, and SSL/TLS (Certificates management included). โ€ข Protocol Support: Fully compatible with MQTT 3.1.1 and the latest MQTT 5.0 features (User Properties, Shared Subscriptions). โ€ข Data Visualization โ€ข Syntax highlighting for JSON, XML, and plain text. โ€ข Hex view for binary data inspection. โ€ข Real-time charts for numerical payloads. โ€ข Intuitive Interface: Chat-style message history makes tracking Publish/Subscribe flows simple. โ€ข Broker Compatibility: Works seamlessly with EMQX, Mosquitto, HiveMQ, AWS IoT, Azure, and Google Cloud IoT. โ€ข Supports dark mode and light mode โ€ข Support for displaying replies in hexadecimal or plain text โ€ข Support sending messages in hexadecimal format Why choose us? โ€ข Reliable: Keeps background connections alive (where supported) for continuous monitoring. โ€ข Flexible: Manage multiple broker profiles and switch between them instantly. โ€ข 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

39Tools4 screens
MQTT Debug & Analyzer Client4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences ยท 5 level
39Tools versus MQTT Debug & Analyzer Client: the parameters behind the verdict, then further details
Parameter39ToolsMQTT Debug & Analyzer Client
PriceFreeFree
Positive reviewsโ€”50.0% of reviews
Update frequencyEvery 9 monthsEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
Monetizationโ€”Subscription
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS12.0 โ€” better15.0
Further details โ€” not scored
Size112 MB18 MB
Age rating4+4+
Developer็ญ– ็Ž‹ๅฐ็Žฒ ็Ž‹

In-app purchases

None

39Tools

No in-app purchases

3 purchases

MQTT Debug & Analyzer Client

Subscriptions2
  • MQTT Month Pro$2.991 Month
  • MQTT Yearly Pro$4.991 Year
One-time1
  • MQTT Lifetime Pro$5.99

Questions

Is 39Tools free?
39Tools is free to download, with no in-app purchases.
Is MQTT Debug & Analyzer Client free?
MQTT Debug & Analyzer Client is free to download, with in-app purchases available.
Do 39Tools or MQTT Debug & Analyzer Client have ads?
Neither 39Tools nor MQTT Debug & Analyzer Client shows ads.
Which is updated more often, 39Tools or MQTT Debug & Analyzer Client?
39Tools ships an update every 9 months, and MQTT Debug & Analyzer Client every 3 weeks. Most recently, 39Tools was updated on October 3, 2026 and MQTT Debug & Analyzer Client on October 9, 2026.

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