Sari, R.P. , Fatudin, A. , Saputro, R.E. and Arifudin, D. 2024. Optimizing the Blood Donation App with Gamification Using User-Centered Design. Sinkron : jurnal dan penelitian teknik informatika. 8, 1 (Jan. 2024), 83-95. DOI:https://doi.org/10.33395/sinkron.v9i1.12988.