Sundial: Living Astro Clock
Real sun. Real shadows.
Only for Apple TV
Free
Apple TV
Real sun. Real shadows. Mesmerizingly Beautiful.
Stop watching fake clocks.
Watch actual solar shadows crawl across a sundial in real time — calculated with the same precision NASA uses.
This isn’t a gimmick. It’s the most beautiful astronomical clock ever made for TV.
As the sun moves across the sky (using the renowned NOAA/Meeus algorithm), everything reacts. The shadows soften and sharpen with a 60-step penumbra. The light temperature shifts from warm amber to cool blue-grey. The entire scene breathes through sunrise, golden hour, daylight, sunset, and night.
It’s part scientific instrument, part living digital art.
Features:
- Scientifically accurate real-time solar position (azimuth + altitude)
- 60-step physically-based penumbra shadows via CustomPainter
- Altitude-driven shadow colour temperature
- Ambient occlusion contact shadows + volumetric edge highlights
- Dynamic day/night palette that actually feels alive
- Radial gradient sky that follows the real sun path
- Orbiting celestial minute marker
- 24-hour time simulation slider (scrub the entire day)
- Built exclusively for the big screen — immersive fullscreen, landscape locked
- TV-friendly manual location entry
Perfect for:
- Turning your TV into a hypnotic piece of living art
- Replacing soulless digital clocks
- Astronomy nerds with good taste
- People who want their TV to feel expensive even when it’s "off"
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Stuart Gardoll, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stuart Gardoll
- Size
- 12.1 MB
- Category
- Utilities
- Compatibility
Requires tvOS 15.0 or later.
- Apple TV
Requires tvOS 15.0 or later.
- Apple TV
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Connect I/O