Degree-Day Phenology Calculator ('shiny' Application) R package DegreeDayCalc version 0.1.0 Provides a 'shiny' application to compute daily and cumulative degree-days from minimum and maximum temperatures using average, single triangle, and single sine methods, with optional upper temperature thresholds. The application maps cumulative thermal accumulation to user-defined developmental stage thresholds and supports exporting tabular and graphical outputs. The degree-day approach follows assumptions described by Higley et al. (1986) <doi:10.1093/ee/15.5.999>. Software Depends: R (>= 4.1) Imports: shiny, DT, ggplot2 Suggests: testthat (>= 3.0.0) Victor Manuel Almaraz Valle <almarazkrae@gmail.com> Comprehensive R Archive Network (CRAN) Victor Manuel Almaraz Valle [aut, cre] (ORCID: <https://orcid.org/0000-0002-3673-8002>), J. Concepción Rodríguez Maciel [aut], Gustavo Ramírez Valverde [aut], Jaime Alfredo Urzua Gutierrez [aut], Manuel Alejandro Tejeda Reyes [aut] MIT + file LICENSE (https://CRAN.R-project.org/package=DegreeDayCalc/LICENSE) 2026-02-17 application/tgz https://CRAN.R-project.org/package=DegreeDayCalc doi:10.32614/CRAN.package.DegreeDayCalc