Turn this phone into a scrolling text sign. Tap the display to come back here.
If you don't see "build v8" up there, you're on an old cached copy — tap "Check for latest version" above, or for a guaranteed-fresh look, open this link in a Private/Incognito tab (that never has an old cached version installed).
📲 How to install / add to home screen
Preview
Defaults to → (left to right) — the most common way to use this as a sign. Pick any of the 4 to change which edge it starts from.
Independent of scroll direction above — e.g. you can have upright stacked characters that still travel left to right as a whole column.
Line up several phones side by side (any mix of Android/iPhone — this uses each phone's own clock, not an app-specific protocol). Each phone shows the SAME message, but starts its scroll at a synced clock time with a per-device offset — when phones are the same width and placed in order, the moving line looks continuous across screens. Best-effort sync only (no server): works well on the same wifi/time zone, can drift a little over long sessions — tap "Start display" again on all phones to realign anytime.
Font size automatically multiplies by "Total phones" — with 4 phones, the text renders 4× bigger than the "Font size" slider says, so one giant character spans across all 4 screens together instead of each phone showing its own small copy.
If this phone still looks slightly ahead/behind the others after starting, nudge it here (negative = start a bit earlier, positive = start a bit later) and tap "Start display" again — this is a manual correction on top of the clock-based sync above, for closing small leftover drift.