EasyMQTT

EasyMQTT is an MQTT client for iOS, allowing you to interact with any MQTT Broker. Use it to manage your own setup at home, control Zigbee2MQTT or other IoT applications.
It features a simple, user friendly interface for both iPhone and iPad, supporting both light and dark mode. Build your own dashboard in the app with live-updating widgets and get an overview over sensors or other values.

Add widgets to your Home Screen to display MQTT messages that are fetched from (retained) topics. Use the graph widget to show a beautiful graph of some sensor or value over the past 24 hours (works great with Zigbee2mqtt sensors, make sure to set the sensor to retained).

Unlock EasyMQTT Plus in the app for additional features. Save your favorite and most used topics in the app or save whole MQTT messages to send with just the tap of a button. Send and receive messages using Siri Shortcuts from the background, unlock the full potential of Siri Shortcuts by connecting it to your Home Automation setup over MQTT.
Create multi graph widgets to display values from any MQTT topic and add them to your Home Screen for an easy overview.