Vanderwaals is an Android wallpaper application that uses on-device machine learning to understand your unique aesthetic preferences and automatically surfaces wallpapers you'll love. The app eliminates the need for endless scrolling by delivering personalized wallpaper recommendations based on your individual taste.

The app features intelligent personalization using machine learning that analyzes deep visual features (70%) through MobileNetV3 neural network for artistic style, composition, and mood analysis. It includes color matching (20%) using LAB color space for perceptually accurate palette matching and category learning (10%) for preferences like minimal, nature, abstract, and dark themes. Vanderwaals offers adaptive learning with exponential moving average (EMA) that smoothly integrates new preferences, learns from wallpaper duration as implicit feedback, and includes smart exploration to occasionally suggest new styles.

The application provides a massive curated library with thousands of high-quality wallpapers from GitHub collections (aesthetic & minimalist designs, Linux ricing wallpapers, anime & digital art, color schemes) and Bing Photography Archive (professional UHD photography, daily featured wallpapers, global landscapes & nature). It includes weekly auto-updates that add new wallpapers automatically to keep the library growing.

Vanderwaals offers powerful automation with auto-change triggers including every unlock, hourly intervals, daily at custom time, or manual only. It can apply wallpapers to lock screen, home screen, or both simultaneously, and includes smart crop functionality where AI focuses on interesting regions to avoid awkward cropping surprises. The app provides two modes: Auto Mode for starting fresh and discovering wallpapers, and Personalize Mode for uploading a favorite wallpaper for instant similar matches.

The app is built privacy-first with 100% offline AI where all machine learning runs on your device, zero analytics with no Firebase, Google Analytics, or tracking SDKs, and no data collection ensuring your preferences never leave your phone. It features beautiful Material 3 design with modern interface following latest guidelines, dynamic colors for Android 12+, AMOLED-optimized pure black dark theme, and smooth animations powered by Lottie.

Vanderwaals includes history and feedback features with timeline view showing all applied wallpapers with timestamps, quick actions for liking, disliking, or downloading instantly, date grouping organized by Today/Yesterday/Month, and full preview with pinch-to-zoom viewer. The app is fully open source under AGPL-3.0 license, providing full code transparency for users to audit.