Apple TV 3rd generation (the older black box) and earlier models do not support tvOS apps and cannot run LightLoop.
Budget Tip:
If you’re not afraid of pre-owned tech, check-out eBay, OfferUp, and Facebook Marketplace - you can often find perfectly functional (11-year-old) Apple TV HD’s (2015) for $30-$50 that still run the latest tvOS (26.x). So with Apple’s typical development cycle even one of these “vintage” devices should still be able to receive LightLoop updates for at least another decade.
For lobby or unattended displays, you’ll want LightLoop to launch automatically whenever the Apple TV restarts.To configure this on tvOS:
Go to Settings → Apps → LightLoop
Enable Open on Startup (if available on your tvOS version)
Alternatively, place the LightLoop app in the top row of your Apple TV home screen. tvOS restores the last-used app after a reboot, so as long as LightLoop was the last thing playing, it resumes automatically.