Graded Response Model R package GRShiny version 1.0.1 Simulation and analysis of graded response data with different types of estimators. Also, an interactive shiny application is provided with graphics for characteristic and information curves. Samejima (2018) <doi:10.1007/978-1-4757-2691-6_5>. Software Depends: R (>= 3.6.0) Imports: shiny, shinyWidgets, bslib, DT, lavaan, mirt, sirt, ggplot2 (>= 3.5.2), dplyr, readr, tidyr, stringr, magrittr, purrr, data.table, MASS, utils, stats, flextable, gt, officer, openxlsx, sass Suggests: testthat (>= 3.2.0), knitr, rmarkdown Sooyong Lee <sooyongl09@gmail.com> Comprehensive R Archive Network (CRAN) Sooyong Lee [aut, cre], Tiffany Whittaker [aut], Laura Stapleton [aut] GPL (>= 3) 2025-08-21 application/tgz https://CRAN.R-project.org/package=GRShiny doi:10.32614/CRAN.package.GRShiny