LEDBand:
LED Scroller Banner
Transform your mobile device into a bright electronic LED board. Designed for fans cheering at live concerts (推し活), taxi drivers paging at airports, and social communication in loud bars.
Application Highlights
Core Dual-Engine Renderer
Zero-latency Live Preview inside the dashboard configuration workspace coupled with a hardware-accelerated full-screen activity mode locked in landscape.
High-Density Workspace
Includes granular speed and size sliders, an SQLite-backed history database for quick message recall, and custom font mapping (Matrix, Pop, Gothic).
Advanced Creative FX
Authentic pixel-grid physical LED simulator, variable-frequency blinking, mirror-axis mode for front selfie camera recording, and glowing neon aura filters.
Dynamic Canvas Layering
Layer custom video or image backings behind scrolling text. Integrates a real-time microphone analyzer to pulse neon lights to surrounding music.
Zero-Permission Privacy Blueprint
Fully compliant with European General Data Protection Regulation (GDPR) and the Japanese Act on the Protection of Personal Information (APPI). The application requests zero dangerous runtime system permissions (e.g., location, files, contacts) during baseline configuration, assuring complete user telemetry safety.
Continuous Low-Overhead Canvas Loop
Standard Android view hierarchies trigger intensive CPU draws under rapid translations. LEDBand bypasses complex layouts by employing hardware-accelerated custom Canvas and surface drawing hooks, maintaining a locked high-refresh rendering target (60+ FPS natively, scaling to 120Hz on premium panels) to suppress thermal throttling and conserve battery life.
01. Hybrid Strategy
Unobtrusive banner placement at the dashboard base and frequency-controlled interstitial transition ads.
02. Premium Billing Tier
Seamless Google Play Billing API integration to instantly sweep advertisements, unlock exclusive neon styles, and enable advanced Japanese/Global font variations.
Technical Architecture
Presentation
Jetpack Compose & Canvas
Local Storage
SQLite & Room DB
Design Pattern
MVVM Pattern
Integrations
AdMob & Billing API