In the digital age, it's crucial to have an easy and direct way for doctors and patients to interact. This is especially important for making appointment booking faster, storing medical information securely, and ensuring effective communication during emergencies. This thesis focuses on the creation and implementation of a Web-based Platform and Mobile Application for Improved Healthcare Access in remote and underserved areas. The main goal is to make healthcare services more accessible, boost the efficiency of healthcare delivery, and enhance health data management. The " Web-based Platform and Mobile Application for Improved Healthcare Access " was developed using React.js for the front end and Node.js for the back end. The application offers various features, including appointment scheduling, patient record management, and real-time communication between patients and healthcare providers. By using mobile technology, the application seeks to overcome the geographical and logistical challenges that often limit access to quality healthcare in remote regions. This research uses qualitative case studies. Data from pilot implementations in selected communities show notable improvements in healthcare access and operational efficiency. Moreover, the application's data management capabilities provide valuable insights into public health trends, which can support better policy-making and resource distribution. The results of this study suggest that mobile clinic applications like this one can significantly improve healthcare delivery in Rwanda by making it more accessible, efficient, and data-driven. The thesis concludes with recommendations for expanding the application to more regions and integrating it with existing healthcare systems to maximize its benefits.