MQTT Loupe Pro
Manage your MQTT traffic
$1.99 · Designed for iPad. Not verified for macOS.
MQTT Loupe Pro is an intuitive utility to inspect and manage MQTT traffic exchanged on an MQTT broker. Connect to any public or local MQTT broker, subscribe to topics, view details of messages being transmitted and publish new messages to any topic.
Don't remember that one message or topic? Fire up the search to find it instantly using full-text search through all topics, and results updating live with new hits appearing as they arrive.
With built-in JSON highlighting for viewing and sending this app is perfect for monitoring and managing Zigbee2Mqtt. JSON-aware auto-completion when publishing JSON messages makes it even easier. And if you need to work with binary message payloads, the built-in hex viewer and editor has you covered. Got frequently used topics that are further down the hierarchy? Make them favorites for easy and instant access!
Concerned about security? Let the server's certificate be validated before connecting; you don't have to allow insecure connections based on untrusted certificates. Need more? Provide a client certificate to authenticate yourself against the server.
All features in a nutshell:
- clean and simple interface
- hierarchical topic view
- sidebar with history of recently opened topics
- powerful full-text search capabilities across all topics and for a single message
- search results are automatically updated when new messages arrive
- extended message details, with proper formatting and syntax highlighting of JSON messages
- support for binary message payloads, including an integrated with a hex editor
- support UTF-8 and ISO 8859-1 (Latin-1) encoding
- publish messages from within the app or with Siri Shortcuts
- auto-completion for JSON messages based on previous messages
- topic auto-completion
- easily copy any topic or message value
- authentication with username/password or client certificates
- connect over MQTT or WebSocket protocol
- support for MQTT 3.1.1 and MQTT 5
- support for SSL/TLS
- support for the Server Name Indication (SNI) TLS extension
- support for self-signed certificates
- full server certificate validation
- manage and connect multiple brokers at once
- full support for quality of service, for both subscribing and publishing
more I figured out how to sort brokers so the app is perfect!
Developer Response Thanks a lot for your feedback! It's very motivating to read that people enjoy using this app!
I figured out how to sort brokers so the app is perfect!
Thanks a lot for your feedback! It's very motivating to read that people enjoy using this app!
User interface improvements and bugfixes
1.10.2 Mar 3
Update user interface for iOS 26 and liquid glass
Minor user interface improvements and bugfixes
1.10.1 12/06/2025
Add support for sending binary message payloads using the new hex editor
Add support for sending message payloads using either UTF-8 and ISO 8859-1 character encoding
Minor bugfixes
1.10.0 02/17/2025
Improve handling of very large payloads
Add ability to search in binary payload
Add toggle for case-sensitive search in payload
1.9.1 09/11/2024
Add support for viewing binary message payloads, including a new hex viewer
Get suggestions for the next JSON token (based on other received messages)
Several user interface improvements and bugfixes
1.9.0 08/27/2024
Add support for custom paths for WebSocket connections
Several user interface improvements and bugfixes
1.8.9 06/12/2024
Add "Publish" application shortcut
Remember connected servers after restart
Fix server handling in multi-window environments
1.8.8 11/20/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
Version 1.8.1:
Add support for TLS Server Name Indication (SNI)
Disable Apple's App Transport Security in favour of our certificate validation, allowing untrusted WebSocket connections
Version 1.8.2:
Show preview of current message payload in topic search results
User interface improvements and bugfixes
Version 1.8.3:
User interface improvements and bugfixes
Version 1.8.4:
Improved certificate validation
Version 1.8.5 and 1.8.6
User interface improvements
Version 1.8.7:
Show warning when subscription requests are rejected
Several user interface improvements and bugfixes
1.8.7 11/07/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
Version 1.8.1:
Add support for TLS Server Name Indication (SNI)
Disable Apple's App Transport Security in favour of our certificate validation, allowing untrusted WebSocket connections
Version 1.8.2:
Show preview of current message payload in topic search results
User interface improvements and bugfixes
Version 1.8.3:
User interface improvements and bugfixes
Version 1.8.4:
Improved certificate validation
Version 1.8.5 and 1.8.6
User interface improvements
1.8.6 08/06/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
Version 1.8.1:
Add support for TLS Server Name Indication (SNI)
Disable Apple's App Transport Security in favour of our certificate validation, allowing untrusted WebSocket connections
Version 1.8.2:
Show preview of current message payload in topic search results
User interface improvements and bugfixes
Version 1.8.3:
User interface improvements and bugfixes
Version 1.8.4:
Improved certificate validation
Version 1.8.5:
User interface improvements
1.8.5 06/29/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
Version 1.8.1:
Add support for TLS Server Name Indication (SNI)
Disable Apple's App Transport Security in favour of our certificate validation, allowing untrusted WebSocket connections
Version 1.8.2:
Show preview of current message payload in topic search results
User interface improvements and bugfixes
Version 1.8.3:
User interface improvements and bugfixes
Version 1.8.4:
Improved certificate validation
1.8.4 06/28/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
Version 1.8.1:
Add support for TLS Server Name Indication (SNI)
Disable Apple's App Transport Security in favour of our certificate validation, allowing untrusted WebSocket connections
Version 1.8.2:
Show preview of current message payload in topic search results
User interface improvements and bugfixes
Version 1.8.3:
User interface improvements and bugfixes
1.8.3 06/20/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
Version 1.8.1:
Add support for TLS Server Name Indication (SNI)
Disable Apple's App Transport Security in favour of our certificate validation, allowing untrusted WebSocket connections
Version 1.8.2:
Show preview of current message payload in topic search results
User interface improvements and bugfixes
1.8.2 06/08/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
Version 1.8.1:
Add support for TLS Server Name Indication (SNI)
Disable Apple's App Transport Security in favour of our certificate validation, allowing untrusted WebSocket connections
1.8.1 04/27/2023
Added a preview of details for the current message in each topic
Added the ability to search within the payload of a single message and navigate between the results
Added the ability to walk the message history in the details view
Improved topic hierarchy navigation by jumping straight to the first non-empty subtopic and skipping empty intermediate topics
Added advanced server settings
User interface improvements and bugfixes
1.8.0 04/25/2023
Added a new sidebar showing a history of recently opened topics
Added support to stop receiving messages, e.g. for very busy borkers
Added server setting validation with a detailed error description
Version 1.7.1:
Save history of recently opened topics across restarts
Version 1.7.2:
Added support to clear history of recently opened topics
User interface improvements and bugfixes
Version 1.7.3 and Version 1.7.4:
Minor bugfixes
Version 1.7.5:
Fix handling of empty topic parts in sidebar
Minor bugfixes for iOS versions prior iOS 16
Version 1.7.6:
Improve multi-window handling with separate topic histories per window
1.7.6 02/07/2023
Added a new sidebar showing a history of recently opened topics
Added support to stop receiving messages, e.g. for very busy borkers
Added server setting validation with a detailed error description
Version 1.7.1:
Save history of recently opened topics across restarts
Version 1.7.2:
Added support to clear history of recently opened topics
User interface improvements and bugfixes
Version 1.7.3:
Minor bugfixes
Version 1.7.4:
Minor bugfixes
Version 1.7.5:
Fix handling of empty topic parts in sidebar
Minor bugfixes for iOS versions prior iOS 16
1.7.5 01/29/2023
Added a new sidebar showing a history of recently opened topics
Added support to stop receiving messages, e.g. for very busy borkers
Added server setting validation with a detailed error description
Version 1.7.1:
Save history of recently opened topics across restarts
Version 1.7.2:
Added support to clear history of recently opened topics
User interface improvements and bugfixes
Version 1.7.3:
Minor bugfixes
Version 1.7.4:
Minor bugfixes
1.7.4 01/23/2023
Added a new sidebar showing a history of recently opened topics
Added support to stop receiving messages, e.g. for very busy borkers
Added server setting validation with a detailed error description
Version 1.7.1:
Save history of recently opened topics across restarts
Version 1.7.2:
Added support to clear history of recently opened topics
User interface improvements and bugfixes
Version 1.7.3:
Minor bugfixes
1.7.3 01/22/2023
Added a new sidebar showing a history of recently opened topics
Added support to stop receiving messages, e.g. for very busy borkers
Added server setting validation with a detailed error description
Version 1.7.1:
Save history of recently opened topics across restarts
Version 1.7.2:
Added support to clear history of recently opened topics
User interface improvements and bugfixes
1.7.2 12/21/2022
Added a new sidebar showing a history of recently opened topics
Added support to stop receiving messages, e.g. for very busy borkers
Added server setting validation with a detailed error description
Version 1.7.1:
Save history of recently opened topics across restarts
1.7.1 12/06/2022
Added a new sidebar showing a history of recently opened topics
Added support to stop receiving messages, e.g. for very busy borkers
Added server setting validation with a detailed error description
1.7.0 12/04/2022
Added search feature to find any topic or message
Added support for copying topic names, message values, etc. from anywhere
Several user interface improvements and bugfixes
Version 1.6.1:
Fix issue with message search results in current topic
User interface improvements
Version 1.6.2:
Improve handling of high-traffic brokers
User interface improvements and bugfixes
Version 1.6.3:
Improve live search for high-traffic brokers
1.6.3 11/06/2022
Added search feature to find any topic or message
Added support for copying topic names, message values, etc. from anywhere
Several user interface improvements and bugfixes
Version 1.6.1:
Fix issue with message search results in current topic
User interface improvements
Version 1.6.2:
Improve handling of high-traffic brokers
User interface improvements and bugfixes
1.6.2 10/31/2022
Added search feature to find any topic or message
Added support for copying topic names, message values, etc. from anywhere
Several user interface improvements and bugfixes
Version 1.6.1:
Fix issue with message search results in current topic
User interface improvements
1.6.1 10/12/2022
User interface improvements and bugfixes
more Version 1.10.2 Mar 3
Data Not Collected The developer does not collect any data from this app.
