Core Cleaner positions itself as an all-in-one Android optimization solution developed by MGEN, offering users a centralized platform for device maintenance. The application addresses common smartphone performance issues through a suite of cleaning and monitoring tools designed to extend device lifespan and improve operational efficiency. The application's core functionality includes detailed memory monitoring that provides real-time storage analytics, enabling users to identify space-consuming files quickly. The cleaning module systematically removes cache files, residual data, and temporary documents that accumulate during normal device usage. Privacy protection features include an app locker function that secures sensitive applications with authentication requirements. The duplicate photo detector employs algorithmic scanning to identify redundant images, while sensor diagnostics verify hardware component functionality. User interface design employs a card-based layout with color-coded indicators showing storage status and optimization opportunities. Navigation follows conventional Android patterns with clear iconography and progress indicators during scanning operations. Real-world usage typically involves periodic scans initiated by storage warnings or performance degradation, with the application providing actionable recommendations for file removal and system optimization. User feedback indicates generally positive reception of the application's functional capabilities, though advertising implementation emerges as a consistent concern. Mike Morgan's July 21, 2025 review notes that 'ads pop up in the middle of the page and are in the way of the results of the scans,' suggesting intrusive placement that affects usability. Andrew S. S. Nimely's August 4, 2025 endorsement highlights effective storage management, describing how the app reduces 'heavy files that are inactive.' Keith Monson's August 8, 2025 review acknowledges functionality but criticizes 'repetitive' advertising implementation. The application demonstrates strongest performance in storage optimization and duplicate media management, providing tangible value for users experiencing space constraints. Limitations center around advertising implementation that some users find disruptive to the core experience. Core Cleaner represents a viable option for Android users seeking comprehensive device maintenance without premium subscriptions, particularly those tolerant of advertising-supported models in exchange for robust functionality.