<![CDATA[Human Immunodeficiency Virus (HIV) and Acquired Immunodeficiency Syndrome (AIDS) remain major global public health challenges, including in Indonesia, where adolescents are particularly vulnerable due to high-risk behaviors. This study aimed to evaluate the effectiveness of an Android-based HIV/AIDS monitoring application (PAHIVA) in improving adolescents’ knowledge and facilitating early HIV/AIDS risk screening. A pre-experimental study with a one-group pretest–posttest design was conducted among 90 high school students in Singkawang City. Data on HIV/AIDS knowledge were collected using structured questionnaires before and after the intervention and analyzed using the Wilcoxon signed-rank test. The results showed a statistically significant increase in knowledge scores, with the median rising from 67 at baseline to 87 after the intervention (p < 0.001). A total of 76 participants demonstrated improved knowledge, while 14 showed no change. Additionally, the application-based screening identified 9 participants (10%) as being at high risk for HIV/AIDS, who were subsequently referred to the nearest Voluntary Counseling and Testing (VCT) clinic for further evaluation. In conclusion, the PAHIVA application was associated with improved knowledge and demonstrated potential as a preliminary HIV/AIDS risk screening tool among adolescents. This mobile health innovation may contribute to strengthening adolescent-focused HIV/AIDS prevention strategies, although further studies with more robust designs are recommended to confirm its effectiveness.]]>
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