Dotlumo: LED Banner Scroller

Turn your phone into a bright scrolling LED sign. Type a message, tap the preview and hold it up: at a concert, at the airport, in a shop window or across a noisy room.

THE SHOW COMES FIRST
• No ads while your sign is playing. Ever. In the free version ads stay in the editor: a small banner, and at most one full-screen ad after a video export.
• No weekly subscription. Pro is a one-time purchase, yours for life.
• Works offline. No account, no sign-up.

A REAL LED LOOK
• A true dot-matrix display drawn on the GPU: smooth scrolling, sharp at any size.
• Or the classic style: big glowing text in your phone's font.
• Choose text and background colors, glow, size and the visibility of unlit LEDs.
• Colors your way: rainbow, gradients, a slow color cycle, a color per word, outline, neon, shadow and 16 one-tap themes.
• Scroll left, scroll right or keep it still; set the reading speed from slow to very fast.
• Light effects: blink (never faster than 2.5 flashes a second), fade or breathe; and mirror mode so it reads correctly through a car or shop window.
• Scroll endlessly, once, 2 to 10 times, or back and forth.
• Up to 3 lines, aligned left, center or right, top, middle or bottom.

MADE FOR HOLDING UP
• The show turns to landscape by itself, uses the brightness you choose and keeps the screen on.
• An optional 3-2-1 countdown gives you time to turn the phone around.
• Tap for brightness, pause, lock and exit. A locked show ignores stray touches; press and hold to unlock.
• Swipe to the next or previous favorite without leaving the show.
• Long shows: when the phone gets hot or the battery is low, the show turns its glow off and dims itself.

CLOCK, TIMERS AND LIGHTS
• Clock, countdown, countdown to a date or stopwatch, in your sign's own look.
• Shop kit: OPEN with the time, an opening countdown, BACK IN 5 MINUTES.
• Concert kit: light sticks in any color, steady or breathing.
• Word by word: one word at a time, as large as the screen allows.

YOUR SIGNS, SAVED
• Save favorites with their colors and style, rename, duplicate and reorder them.
• Playlists: put signs in order, each for its own time, and step through them in the show.
• History keeps the last 100 signs you showed. Turn it off any time; it is stored only on your phone.
• Ready-made templates for the airport, concerts, birthdays, shops and more, in English, Turkish, Persian and Arabic.

TALK WITHOUT SPEAKING
• Communication mode: type or pick a quick phrase, show it full screen, turn it to the person opposite and have it read aloud. Nothing typed there is saved.

SHARE AS A VIDEO OR IMAGE
• Turn your sign into an MP4 video (tall, square or wide, 5 to 60 seconds) or a still image for WhatsApp, Instagram or TikTok. Made on your phone; saved without any permission.

LANGUAGES
• Turkish is spelled right, including İ, Ş and Ğ on the LED display.
• Persian, Arabic and Hebrew display correctly, right to left, with joined letters on the LED dots too; Russian and Greek as well.
• The app speaks 14 languages, from English, Spanish and Portuguese to Russian, Indonesian and Vietnamese.

PRO (ONE-TIME)
• No ads, now and in any ad format added later.
• LED look pack: square and diamond dots, dot size, unlit LED color.
• Your own gradients: 2 to 5 colors, for text and background.
• Videos in 1080p and 60 fps without the small logo, and GIF export.
• Playlists that play by themselves: signs in order, each for its own time, on a loop.
• All future on-device Pro features.
• Try the Pro look in the editor before you buy.

Light sensitivity: blinking stays below 2.5 flashes a second, but flashing or color-changing light can still affect people with photosensitive epilepsy. Turn the effect off if it bothers you.

Privacy: no account, and your messages never leave your phone. The free version shows ads from Google AdMob; you can review your ad privacy choices in the app where the law requires it.

Questions or ideas? Write to hi@tendanto.com. Made by Tendanto Ltd.

Recent changes:
Low-battery mode: off the charger the show tells the battery level and about how long it will last. Anonymous usage statistics help us improve the app; they never include your messages and can be turned off in the Display tab.