Themelia: Theme & Widget positions itself as a comprehensive iOS personalization solution, offering users an extensive library of visual customization options alongside functional widgets. Developed by WOOHOO LIMITED, the application addresses the growing demand for personalized mobile interfaces, particularly following iOS's increased widget support. With over 26,000 total assets spanning themes, wallpapers, and widgets, the app competes in the crowded customization market by emphasizing both quantity and categorical diversity. The application's core functionality revolves around its massive content library organized into specific categories including iOS 18 styles, sports, movies, music, anime, aesthetics, Kpop, cartoons, and comics. Beyond static themes, Themelia implements practical widget functionality including real-time battery status indicators, dynamic date displays, and live weather forecasts. The widget system integrates with iOS's native widget framework, allowing users to place functional elements alongside decorative ones. Content discovery features include categorized browsing, search functionality, and presumably some form of recommendation system, though the exact algorithmic curation methods aren't explicitly detailed in available information. User experience appears streamlined for immediate engagement, with the interface designed to facilitate quick browsing and application of themes. The installation process for widgets follows iOS conventions, requiring users to add widgets through the standard iOS widget menu before configuring them through Themelia's interface. Real-world usage patterns suggest most users engage with the app for specific aesthetic preferences—particularly Kpop and anime themes—while also appreciating the functional widgets that provide utility beyond mere decoration. The application maintains iOS design language conventions while offering customization options. User feedback trends overwhelmingly positive, with a 4.62/5 rating reflecting strong satisfaction. Multiple reviews from July 2025 highlight particular satisfaction with Kpop-themed content, with user 'Skz happy happy' (2025-07-24) praising SKZ SKZOO wallpaper implementation. User 'AudiChels' (2025-07-23) noted the application's ease of use and enjoyment in decoration, while 'Leewardgirl' (2025-08-21) repeatedly emphasized the adorable theme selection. Some reviews indicate initial skepticism overcome by positive experience, as demonstrated by user '❤️‍🩹🩷💔💞' (2025-07-29) who described transitioning from doubt to enthusiasm. The application's primary strength lies in its enormous content library covering niche interests alongside mainstream aesthetics, though this breadth may come at the expense of depth in specific categories. The integration of functional widgets alongside decorative elements provides practical value beyond superficial customization. Limitations include potential discoverability challenges within the massive library and possible quality consistency variations across thousands of assets. The app appears particularly well-suited for users seeking specific fandom-themed customization or those wanting to combine aesthetic personalization with functional home screen enhancements, though users preferring minimalist interfaces may find the options overwhelming.