Lumitron: Fullscreen Clock

Nikolai Emelianov

About this app

Lumitron turns any screen into a full-screen retro clock display - and nothing else.

TRUE FULLSCREEN, NOTHING ELSE ON SCREEN
No status bar, no navigation buttons, no system UI of any kind. This isn't a clock widget or a browser tab with a clock page open - it's a genuine fullscreen display. Open Lumitron and the only thing on screen is the time.

EIGHT REAL DISPLAY TECHNOLOGIES
Every theme recreates the physics of an actual historic display, not just a different font color:

- LCD - familiar liquid-crystal segments, including the classic grey-green look
- LED - vintage red glow, plus white, green, amber and blue variants
- CRT - cathode-ray tube look with soft glow and scanlines
- VFD (vacuum fluorescent display) - signature blue-green light
- Nixie - neon glow-discharge tubes in warm orange-red
- Panaplex - flat neon seven-segment displays
- Numitron - incandescent filament digits, steady warm light, no flicker
- Electroluminescent (EL) - glowing teal EL panel

AUTHENTIC PHYSICAL EFFECTS
Glow, bloom, ghost segments, fine scan lines and vignette, segment grids, gentle flicker - each effect matched to the display technology it belongs to, and each one can be toggled on or off.

CUSTOMIZE EVERY DETAIL
- Color variants within every display technology
- 12-hour or 24-hour format
- Show or hide seconds
- Adjustable digit size, from compact to full screen
- Thin, regular or bold weight
- Authentic seven-segment DSEG7 font

THREE WAYS TO SET THE TIME
- System time - accurate, always in sync
- Custom time - set any hour, minute and second
- Frozen time - lock the display at a chosen moment, ideal for photos or a shop window display

STAYS AWAKE
While Lumitron is open, the screen never dims or sleeps. Use it as a bedside clock, a desk clock, a background display for a second monitor, or a clean backdrop for photos and video.

LEARN SOMETHING TOO
Each display technology includes a short explanation of how it works and why it looks the way it does.

MINIMAL BY DESIGN
Settings open with one tap anywhere on the screen and close the same way. Nothing else is on screen while the clock is running - no buttons, no bars, no clutter.

ONE APP, EVERY DEVICE
Lumitron works the same way on phone, tablet and desktop - Android and beyond.

Lumitron is exactly what it looks like: a clock. There's no alarm, no timer and no date - just a fullscreen digital clock with eight authentic vintage display technologies.

What’s new

Welcome to Lumitron!

A true fullscreen digital clock with zero system UI - no status bar, no navigation buttons, just the time.

Pick from eight authentic retro displays: Nixie, VFD, LED, CRT, Panaplex, Numitron, Electroluminescent and LCD.