# MQTTAnalyzer — IoT diagnostics

> MQTT broker monitoring and debugging tool for Apple devices. (iPhone/iPad app by Philipp Arndt.)

- Source: https://appshunter.io/ios/app/mqttanalyzer/id1493015317 (this page in markdown: same URL + `.md`)
- Developer: [Philipp Arndt](https://appshunter.io/developer/1493015316)
- Category: Utilities, Developer Tools
- Price: Free
- Rating: 4.50/5 from 22 App Store ratings · 18 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 12 MB
- Languages: American English
- Released: 2020-01-07
- Data updated: 2026-08-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/mqttanalyzer/id1493015317/reviews.md

## What is MQTTAnalyzer?

Monitor and debug your MQTT broker from iPhone, iPad, or Mac.
MQTTAnalyzer is the essential tool for smart home enthusiasts, IoT developers, and anyone working with MQTT-based systems.

Free, open source, and no ads.

CONNECT WITH CONFIDENCE
• MQTT 3.1.1 and MQTT 5.0 support
• MQTT and WebSocket connections
• SSL/TLS with ALPN and server CA certificate validation
• Username/password and client certificate authentication
• Support for self-signed certificates
• Predefined settings for AWS IoT
• Connection diagnostics to identify issues quickly

VISUALIZE YOUR DATA
• Hierarchical topic tree view
• JSON highlighting and pretty-printing
• Time series charts for numeric values
• ANSI color code rendering
• Image viewer with pinch-to-zoom (PNG, JPEG, GIF, WebP, and more)
• Hex viewer for binary payloads

STAY ORGANIZED
• Connect to multiple brokers simultaneously
• Subscribe to multiple topics per broker
• Full-text search across topics and messages
• Unread message indicators
• Statistics panel with message counts
• Large payload support (10MB+) with export

PUBLISH AND CONTROL
• Publish messages with QoS and retain flag
• JSON message builder with form interface
• Delete retained messages from broker
• Siri shortcuts for quick actions

SYNC ACROSS DEVICES
• iCloud sync for settings and certificates
• Native experience on iPhone, iPad, and Mac

Have feedback or feature requests? Visit our GitHub page — MQTTAnalyzer is open source and community-driven.

## Key features

- MQTT 3.1.1 and 5.0 support
- JSON highlighting and pretty-printing
- Time series charts for numeric values
- Connect to multiple brokers
- Full-text search
- Publish messages
- iCloud sync

## Recent user reviews (10 of 18)

All indexed reviews: https://appshunter.io/ios/app/mqttanalyzer/id1493015317/reviews.md

### 2/5 — Doesn’t work with self signed certificates

*2026-08-12*

I tried connecting to a test broker using a self signed certificate but it failed to connect. It seems to ignore the setting that allows untrusted connections. This is true at least for wss:// connections.

**Developer response:** Thank you for the feedback. Can you please try the latest update, released today?

### 4/5 — Very Usable

*2025-12-29*

I use this all the time to monitor numerous topics/messages on my broker backbone. I use MQTT messages to monitor 6 different solar battery systems, 2 water tanks, thermal sensors, etc. Many of these messages are parsed and put in a MariaDB, but some are just sent to the broker so having a good client that lets me watch them as needed is a real help. Only issue I have is that when switching between apps I get disconnected from the server too often. Some of the messages are only posted every 5 or 10 minutes, so I wish I didn't have to just sit with this app in the foreground all the time so I don't miss messages. Other than that, great tool!

### 5/5 — Great utility

*2025-12-10*

This tool is an excellent mobile substitute for the MQTT Explorer desktop app. It’s simple, flexible, and straightforward. I like that it’s open source, so I can learn from it and someday maybe write my own app!

### 5/5 — Nice work

*2025-10-04*

I am developing a containerized app to periodically poll EDS MeshNet environmental sensors via HTPP on my LAN and publish the data to Mosquitto MQTT for discovery and use within Home Assistant. I have been using MQTT explorer on windows for debugging but this is the best app I’ve seen for iOS. Nice work!

### 5/5 — Siri

*2025-08-06, version 2.11.0*

Great feature that it works with Siri and shortcuts

### 5/5 — The best for Home automation development

*2024-11-23, version 2.11.0*

Its just the best and did I say it’s free? The maintainer of this app has done amazing work. Really should be proud of it. Many thanks!

### 5/5 — Great little app

*2024-05-29*

Does just what you wanted to. With clean UI and real time too.
Would be happy to pay $1 or two for this. Just saying!

### 5/5 — GREAT APP

*2023-11-17*

Runs very fast on my MBPro and allows me to quickly find the topics I need to see!

### 5/5 — Best Matt for apple products

*2022-11-02*

I really like this for looking at my home assist Matt instance . I am no where near an expert on Matt and this auto detects my topics and present the data in a highly useable format. Highly recommended!

### 5/5 — Best MQTT browser that I’ve found

*2022-09-30*

Tried a few others and did not like that they did not let you just look at the latest message updating live. This one is great in that event and breaks down the individual properties in the JSON. The Siri shortcuts support sounds awesome. I probably won’t use it since I use Home Assistant for all my automations, but nice to know it’s there.

## Frequently asked questions about MQTTAnalyzer

### What devices does MQTTAnalyzer support?

MQTTAnalyzer is available on iPhone, iPad, and Mac. It offers a native experience across all supported Apple devices.

### Is MQTTAnalyzer free to use?

Yes, MQTTAnalyzer is completely free and open source. It does not include any advertisements.

### What MQTT versions does MQTTAnalyzer support?

MQTTAnalyzer supports both MQTT 3.1.1 and MQTT 5.0 protocols. It also supports MQTT and WebSocket connections.

### Can I connect to multiple MQTT brokers with MQTTAnalyzer?

Yes, you can connect to multiple brokers simultaneously. The app also allows subscribing to multiple topics per broker.

### How does MQTTAnalyzer handle large message payloads?

MQTTAnalyzer supports large payloads up to 10MB and allows for exporting them. It also includes a hex viewer for binary data.

### Does MQTTAnalyzer offer any data visualization features?

Yes, MQTTAnalyzer provides a hierarchical topic tree view, JSON highlighting, time series charts for numeric values, and an image viewer.

### How often is MQTTAnalyzer updated?

The latest version, 3.2.0, was last updated on March 24, 2026. As an open-source project, updates are driven by community contributions.

### What authentication methods does MQTTAnalyzer support for connections?

MQTTAnalyzer supports username/password and client certificate authentication, including self-signed certificates. It also offers SSL/TLS with ALPN and server CA certificate validation.

## Version history (last 5 releases)

### 3.5.0 — 2026-08-23

What's New in 3.5.0

  • Flat view for the topic tree on macOS and iPad — see every topic with its full path in one list (#240)
  • Export or copy a topic subtree as YAML or JSON, including binary payloads
  • Expand, collapse and navigate the topic tree with the arrow keys on macOS
  • Much faster topic list with large topic trees — scrolling, searching and navigating thousands of topics
  • Fix: macOS shows the messages of the tree root itself again (#243)
  • Fix: "Allow untrusted" and custom CA certificates are now honoured for secure WebSocket (wss) connections (#244)

### 3.4.2 — 2026-05-29

What's New in 3.4.2

  • Fix: WebSocket diagnostics now respect the configured WebSocket path (#238)

### 3.4.1 — 2026-05-26

What's New in 3.4.1

  • Fix: MQTT protocol diagnostic now performs a real WebSocket handshake and suggests switching between MQTT and WS when appropriate (#237)

### 3.4.0 — 2026-05-08

What's New in 3.4.0

  • Clear and read message subtrees on iPad and macOS
  • CLI: Publish binary messages via --payload-file option
  • Fix: Reset publish message form on dialog dismiss
  • Fix: Inspect parent topics on iPad (#228)
  • Bug fixes and improvements

### 3.3.3 — 2026-04-15

What's New in 3.3.3

  • CLI: Publish binary messages via --payload-file option
  • Improved UI test infrastructure for macOS and iOS
  • Bug fixes and improvements

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## More apps by Philipp Arndt

- [IoT Panels](https://appshunter.io/ios/app/iot-panels/id6761324976)

All apps by Philipp Arndt: https://appshunter.io/developer/1493015316

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*