HoldSign

Turn your phone into an ultra-bright, full-screen sign. Say it across the room in a second. Airport pickups, taxi hails, concert support, shouting over noise, far-away reminders—open the app and it's a blazing bright text screen. Write whatever you want, hold it up, and be seen. [Ultra-bright, always on] Brightness maxes out, screen never sleeps. Yellow on black is the most visible—readable from dozens of meters away. [One line or two] Shout "TAXI" on one line, or write "THANK / YOU" on two. Each line is independent with its own settings. [Scrolling marquee] Set long text to scroll, like a taxi-top sign running at a steady pace—fully readable, no length limit. [Flashing glow] Slow or fast flash, like a real fluorescent sign flickering—grabs attention from far away. [Three sizes · any color] Switch between large/medium/small, mix any text and background color, one-tap presets. [Portrait or landscape] Hold it tall in portrait, or go wide in landscape. Orientation locks, so it never rotates while you hold it. [Photosensitive safety] A first-run reminder about flashing-light sensitivity—looking out for every user. [Local only · nothing uploaded] Your sign content stays on your device. No internet, no data collection, no third-party SDKs—your privacy is yours. [One-time purchase · everything] No in-app purchases, no subscriptions, no ads. Pay once, unlock everything. [12 languages] Simplified Chinese / Traditional / English / Japanese / Korean / Spanish / Portuguese / German / French / Russian / Arabic / Hindi. Follows your system or pick manually. Hold it up. Say it loud.