Scrolling & static text
For chants, booth signs, quick notices, or shooting prompts. Pick separate fonts for CJK and Latin/numbers so mixed text stays tidy.
iPhone + iPad · Full-screen marquees & color displays
Turn the device in your pocket into a bold color sign.
ChromaBoard is built for crowd cheers, booth signs, quick wayfinding, photo props, and live interaction. Type a line, dial in the font, color, speed, and effect, and your phone or tablet becomes a full-screen display board instantly.
Scrolling / static text
Color flash & animated effects
Stitch devices into one big screen
From small screen to big screen, ready on the spot.
Fast enough for a single device, bright enough for many — text and flashes sync across screens, following the host.
An editor made for live display
ChromaBoard puts the common needs up front: text, font, color, speed, direction, and flash effects are all adjustable right away — no complicated setup.
Rich color control
Customize text color, background, and palette. Save your favorite styles and switch between them fast — no starting from scratch each time.
Portrait or landscape
Lock the display to landscape or portrait — great for handheld, desktop, stuck to a window, or several devices lined up side by side.
Color flash effects
Pulse, strobe, multi-color gradients, barber-pole stripes, flowing palette, and wave effects — for scenes that need stronger visual pull.
Stitch across devices
One device acts as host; the rest join as follower screens. Text and flashes sync across nearby devices.
Offline, local-first
No account needed. Text history, styles, and the sync identifier stay on your device; multi-screen sync only travels between nearby devices.
One person edits, many devices light up together
Multi-screen mode lines up several phones or tablets into one wider marquee. The host edits and plays back; followers display their portion of the screen.
Color flash
Big color blocks, gradients, and flowing animation create a strong on-site presence.
ChromaBoard【彩幕】
Screen stitching
Devices on the same local network can sync; Apple-only setups can also use nearby connections — quick to put together on site.
A quick heads-up before you start
Fast strobing and bright displays may cause discomfort for some people — use with care. Multi-screen sync needs Local Network / Wi-Fi permission; iOS devices also use Bluetooth permission to discover nearby devices.