HIV Incidence Estimation using Recency Testing Data with Population Adjustment R package XSRecencyX version 0.1.0 Tools for estimating HIV incidence using cross-sectional recency testing data, adjusting for internal and external target populations and supporting subtype-specific parameters. The statistical methodology implemented builds on the framework described in Wang, Duerr, and Gao(2025) <doi:10.1002/sim.70216>. Software Depends: R (>= 4.0) Imports: data.table, dplyr, geepack, purrr, magrittr, methods Fei Gao <fgao@fredhutch.org> Comprehensive R Archive Network (CRAN) Sirong Li [aut], Fei Gao [aut, cre] (ORCID: <https://orcid.org/0000-0001-6797-5468>), Marlena Bannick [aut] (ORCID: <https://orcid.org/0000-0001-6797-5978>) MIT + file LICENSE (https://CRAN.R-project.org/package=XSRecencyX/LICENSE) 2026-04-21 application/tgz https://CRAN.R-project.org/package=XSRecencyX doi:10.32614/CRAN.package.XSRecencyX