The high prevalence of hypertension in Indonesia accompanied by low public awareness of blood pressure management is a big challenge in efforts to prevent this non-communicable disease. The main problems raised in this study are the lack of information and public self-control of blood pressure conditions, as well as the uneven collection of data on hypertension patients by health services. To answer these problems, this research developed the Hypertension-ID application, a web-based application aimed at early screening and hypertension education to the public. This research uses the waterfall system development method, starting from the needs analysis stage, system design (using flowchart, DFD, and ERD), implementation using PHP CodeIgniter and MySQL, to testing with the black-box testing method. The results of the study show that the Hypertension-ID application is able to record and analyze users' blood pressure data, calculate body mass index (BMI), and provide information about the causes, risk factors, and management of hypertension. The app also features a reminder feature for regular blood pressure checks. Based on the test results, the app works according to functional requirements and can be accessed via Android, iOS, and Windows. In conclusion, Hypertension-ID is an effective digital media in increasing public awareness and involvement in hypertension control through self-screening and continuous health education