SUPRIYATIN, Wahyu; FEBRIAN PUTRA, Rahmat. An Evaluation of User Satisfaction with the Ruangguru EdTech App Using a Lexicon-Based Sentiment Analysis Approach. JITAR : Journal of Information Technology and Applications Research, [S. l.], v. 2, n. 1, p. 10–21, 2026. DOI: 10.63956/jitar.v2i1.64. Disponível em: https://jitar.org/index.php/jitar/article/view/64. Acesso em: 31 may. 2026.