IoT Manager is a free Android app developed by Victor Brutskiy that provides an easy way to send push notifications from any IoT device to your smartphone or tablet. This app is designed to work with any device supported by MQTT, including ESP8266, Arduino, Raspberry Pi, and more. It supports C, C++, NodeJS, Python, and other clients with MQTT support, making it ideal for DIY enthusiasts.

The app comes with a connection wizard that helps you get started quickly. It also has a detailed event log that makes debugging IoT devices easy. The use of statistics helps optimize data exchange, and there is an end-user mode for non-DIY users.

IoT Manager is developed by the admin of esp8266.ru, who is also the developer of ESPlorer and luatool. The app has a Telegram chat where users can get support and updates. The ESP8266 and ESP32 firmware can be found on GitHub, along with flash instructions.

Overall, IoT Manager is a useful app for anyone looking to send push notifications from their IoT devices to their smartphones or tablets. It is easy to use, supports a wide range of devices and clients, and has a helpful connection wizard and event log.