Estimator for Optimised Optional Randomised Response Technique R package OORRT version 0.1.0 Provides functions for estimation under the Randomised Response Technique for sensitive survey data, including Warner's estimator, Optional Randomised Response Technique estimator proposed by Chaudhuri and Mukerjee,and the Optimized Optional Randomised Response Technique estimator proposed by Pushadapu et al. The package also includes Monte Carlo simulation tools for evaluating estimator performance. The implemented methods are based on Warner (1965) <doi:10.1080/01621459.1965.10480775>, Chaudhuri and Mukerjee (1985),and Pushadapu et al. (2025) <doi: 10.1111/insr.12581>. Software Safeela Nasrin <nasrinkareem315@gmail.com> Comprehensive R Archive Network (CRAN) Safeela Nasrin [aut, cre], Kaustav Aditya [aut], Ritwika Das [aut] GPL-3 2026-07-10 application/tgz https://CRAN.R-project.org/package=OORRT doi:10.32614/CRAN.package.OORRT