User-Centered Mobile Application Design for Standards, Compliance, and Regulatory Services in Saudi Arabia under Vision 2030

Background: Saudi Arabia's digital transformation has shifted many public interactions from office-based transactions to mobile and integrated digital services. Standards, compliance, licensing and regulatory services are especially demanding because users must interpret formal requirements, submit evidence, understand status changes and act within prescribed time limits. A technically functional application can therefore fail if its information architecture, language, error handling or trust cues do not match the user's decision process. Objective: This review synthesises recent evidence on user-centred mobile government, accessibility, digital trust, regulatory technology and citizen-centric service design to identify design principles for mobile standards and compliance services in Saudi Arabia under Vision 2030. Methods: A structured integrative review was undertaken using 30 peer-reviewed, DOI-verified sources published from 2020 to 2025. Evidence was coded across usability, regulatory clarity, accessibility, trust, service integration and continuous improvement, then translated into a design framework for high-consequence public service journeys. Results: The synthesis indicates that effective regulatory applications require more than simplified screens. They should convert rules into task-based pathways, make obligations and consequences visible at the point of action, support Arabic-first and accessible interaction, provide traceable status and evidence handling, minimise avoidable data entry, and expose clear routes for correction and human support. Conclusions: User-centred design can operate as a governance mechanism as well as an interface discipline. When regulatory logic, accessibility, trust and service orchestration are designed together, mobile services can reduce administrative burden while strengthening consistency, transparency and compliance outcomes.