'Shiny' Interface for Complex Survey Data Analysis // Provides a 'Shiny'-based interactive interface for the analysis of complex survey data. The package supports data import from multiple file formats, construction and diagnosis of complex survey designs with stratification, clustering, and sampling weights, as well as estimation of means, totals, proportions, associated standard errors, confidence intervals, and design effects. The multilingual interface facilitates the analysis and visualization of survey results without requiring specialized programming knowledge.