MQTTAnalyzer

The free, open-source MQTT client for iOS and Mac. Monitor your smart home, debug IoT devices, and visualize real-time data — no ads, no subscriptions.

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.