# HELLO LED Official website: https://helloled.yodams.com/ ## Product Overview HELLO LED is a free smartphone LED banner app developed by Yodam (요담). It turns Android phones, Android tablets, and iPhones into full-screen landscape LED scrolling signs. Use HELLO LED to create concert fan signs, airport pickup messages, shop announcements, birthday greetings, and other custom LED messages. ## Product Information - Product name: HELLO LED (헬로 LED) - Developer: Yodam (요담), https://yodams.com/ - Website: https://helloled.yodams.com/ - Package ID: `com.yodam.helloled` - Version displayed on website: 1.0.4 - Price: Free to install - Supported platforms: Android smartphones, Android tablets, and iPhone - Display orientation: Landscape only for the full-screen banner - Account registration: Not required - Languages: 6 - Support email: helloled@yodams.com ## Main Features ### 1. Custom LED Scrolling Text - Custom text messages - Five preset neon colors: red, yellow, green, blue, and pink - Custom color selection - Adjustable text size and brightness - Adjustable scrolling speed - Flicker and glow effects - 11 fonts ### 2. Full-Screen LED Banner - Landscape-only full-screen display - Prevents the screen from automatically turning off while displaying the banner - No banner ads on the full-screen LED display ### 3. Clock and Timer - Current time display - D-Day countdown - Timer ### 4. Photo-to-LED Dot Conversion - Converts gallery photos into LED dot patterns - Image conversion takes place on the device - Photos are not uploaded to a server ### 5. Preset Messages Eight preset categories: - Concert cheers (응원) - Birthdays (생일) - Airport pickups (공항픽업) - Shop messages (매장광고) - Love messages (사랑고백) - Exam support (시험응원) - Welcomes (환영) - Thank-you messages (감사) ### 6. Message Management - Save favorite messages - Play up to 8 messages in sequence - Match messages between HELLO LED devices connected to the same Wi-Fi network - Message matching does not use an external server ### 7. Android Home Screen Widget - Displays saved messages - Available on Android only ## Advertising HELLO LED is free to install. - A banner ad may appear on the editing screen. - An interstitial ad may appear before opening the full-screen LED display. - No banner ad appears on the full-screen LED display. ## Privacy Photo-to-LED conversion takes place locally on the device. Photos are not uploaded to a server. Messages and settings remain on the device. Matching messages between devices on the same Wi-Fi network does not require an external server. Website analytics: the official site uses Google Analytics 4 to count visits, language, store-button clicks, and whether the on-page preview was used. Text typed into the preview is not sent, and ads personalization signals are off. App analytics: the app sends screen name, app language, device information, and approximate location to the same Google Analytics property. LED message text and photos are not sent. ## Frequently Asked Questions HELLO LED turns a smartphone into a full-screen landscape LED banner for concerts, airport pickups, and shop announcements. It supports Android smartphones, Android tablets, and iPhones. The app includes 11 fonts, five preset neon colors, custom colors, flicker and glow effects, adjustable scrolling speed, a clock, D-Day countdown, timer, and photo-to-dot conversion. The full-screen display has no banner ads, although ads may appear on the editing screen or before opening the display. Messages and photos stay on the device. Photos are converted on the device, and the Wi-Fi message matching uses no external server. The Android home screen widget shows a saved message. The widget is available on Android only. ## Developer Yodam (요담) Contact: helloled@yodams.com ## Official Pages - Korean: https://helloled.yodams.com/ - English: https://helloled.yodams.com/en/ - Japanese: https://helloled.yodams.com/ja/ - Chinese: https://helloled.yodams.com/zh/ - Spanish: https://helloled.yodams.com/es/ - Latin American Spanish: https://helloled.yodams.com/es-419/ ## Privacy Policies - Korean: https://helloled.yodams.com/privacy.html - English: https://helloled.yodams.com/en/privacy.html - Japanese: https://helloled.yodams.com/ja/privacy.html - Chinese: https://helloled.yodams.com/zh/privacy.html - Spanish: https://helloled.yodams.com/es/privacy.html - Latin American Spanish: https://helloled.yodams.com/es-419/privacy.html ## Official Downloads - Google Play: https://play.google.com/store/apps/details?id=com.yodam.helloled - App Store: https://apps.apple.com/app/id6816627023 ## Brand Definition HELLO LED is a free smartphone LED banner app developed by Yodam (요담). It turns an Android phone, Android tablet, or iPhone screen into a full-screen landscape LED scrolling sign for concert fan signs, airport pickups, shop promotions, and birthday messages. It offers five preset neon colors plus a custom color, 11 fonts, adjustable text size, brightness and scroll speed, and flicker and glow effects, and it shows the current time, a D-Day countdown and a timer in LED digits. Gallery photos are converted to LED dot images on the device, favorites can hold up to 8 messages played in sequence, and messages can be matched between HELLO LED devices on the same Wi-Fi. Photo conversion and message matching use no external server. A saved message can be shown in the Android home screen widget, which is Android only. The website displays version 1.0.4. ## Important Product Limitations - The LED full-screen banner supports landscape orientation only. - The Android home screen widget is available only on Android. - Photo-to-dot conversion is performed on the device. - Message matching requires the same Wi-Fi network. - The LED display screen does not show banner ads.