MarqueeDeck: LED Banner

Dev Jang

About this app

Turn your phone into a clear, full-screen message display without an account, ads, or a network connection.

MarqueeDeck is an offline LED banner and scrolling-text utility for concerts, airport pickups, classrooms, events, counters, and any place where a message needs to be seen from a distance. Type a message, choose a readable style, and open a full-screen display made for the text itself.

Build the display you need:

• Show text as a static sign or scroll it left or right.
• Adjust scroll speed, text size, weight, and letter spacing.
• Choose the text and background colors for strong contrast.
• Use emoji and right-to-left text alongside other writing systems.
• Tap the full-screen display to pause or resume movement.

Designed for real display situations:

• Enter an immersive full-screen view that adapts to the available display.
• Set brightness for each message without changing the permanent system setting.
• Return to the device's normal brightness behavior when the display closes.
• Keep the screen awake only while the active display is visible.

Reuse messages without an account:

• Keep up to 20 favorite messages on the device.
• Reopen up to 10 recent messages.
• Store message text and display settings locally for dependable offline use.
• Use the interface in English, Korean, or Spanish.

Privacy and focus:

MarqueeDeck has no account, network access, advertising, in-app purchases, subscriptions, analytics, or tracking. Messages and settings stay in local app storage and are not uploaded. The app does not include flashing or strobe effects, audio playback, live wallpaper, or file import and export.

Android and the active keyboard are separate software. The keyboard may process what you type according to its own settings and privacy policy. MarqueeDeck receives only the message entered into its text field and does not read unrelated keyboard activity.

What’s new

Initial release of MarqueeDeck. Create static or left/right scrolling LED messages with adjustable speed, size, weight, spacing, colors, and per-message brightness. Use an adaptive immersive full-screen view, tap to pause or resume, use emoji and right-to-left text, and keep up to 20 favorites and 10 recent messages locally. English, Korean, and Spanish interfaces are included. No account, ads, purchases, analytics, or network access.