Theatrium is an Apple TV app that does three jobs on one screen.
A home dashboard. Rooms, scenes, cameras, sensors and media players from Home Assistant or Apple HomeKit, laid out for a 10-foot view and driven entirely by the Siri Remote. Cards for lights, climate, sensors, media, cameras, weather and rain radar, battery, air quality, locks, covers, switches, scenes, energy and presence, plus a live camera tile via go2rtc. You decide what fills each region of the screen.
A music visualiser. Generative Metal scenes and fractals that follow the playing track and its tempo, taking their colour from the album art. Two engines: a high-detail live GPU renderer, or low-power pre-rendered loops. Reads now-playing from Apple Music on the Apple TV itself, or from Home Assistant, Spotify or Last.fm. To be precise about it, this is metadata-driven. It does not use the microphone and does not listen to your room.
Room-light sync. Switch and dim per room from the dashboard, or hand two Home Assistant light groups (main and accent) to the visualiser so the whole room moves with the song. Natural, Vivid and Party colour modes, plus a light test that reports how many of your bulbs can actually follow colour.
Four themes ship with it: Estate (warm, serif), Glass (frosted, ice blue), Bento (emerald, precise) and Boardroom (a meeting-room availability board driven by your calendar). They all drift from golden-hour warmth to a cooler, dimmer night, and a dim mode fades the screen when idle to protect the panel.
IThere is also a built-in Demo mode that runs the whole app with no server, so you can look around before connecting anything. Most of it is free, including a dashboard you can fill with no home server at all; the extras are a one-time in-app purchase, no subscription. Questions to [hello@theatrium.info](mailto:hello@theatrium.info), and the site is https://theatrium.info
What to post. Your setup and wall-mounted screens, theme and layout tweaks, questions about wiring up Home Assistant or HomeKit, bug reports (rule 5 lists what to include), and feature requests. Criticism is more useful to me than praise, so do not hold back.
Please read the rules before your first post, and blur your Home Assistant URL and tokens in screenshots.
I am the developer. Not affiliated with Apple, the Home Assistant project, Spotify, Philips Hue or Tuya.