Home Assistant is a free iPhone app developed by Nabu Casa Inc. It is a powerful home automation platform that allows you to control and monitor your home from anywhere in the world. With Home Assistant Companion, you can easily control all your devices and create complex mobile automations.

One of the key features of Home Assistant is its focus on local control and privacy. This open-source platform supports a wide range of products, including Amazon Echo (Alexa), Apple TV, Arduino, Belkin WeMo, Dark Sky, ecobee, Google Assistant, Google Cast, IFTTT, IKEA Trådfri (Tradfri), Kodi/XBMC, MQTT, MySensors, Nest, Owntracks, Philips Hue, Plex, Pushbullet, Sonos, Wink, and Z-Wave.

To use Home Assistant Companion, you need an iPhone running iOS 12 or later and a configured Home Assistant instance. The instance must be accessible from the Internet and secured with a valid SSL certificate for location tracking. However, basic notifications work even without external access.

With its advanced location and notification engines, Home Assistant Companion is a reliable and convenient tool for controlling and automating your home.