51CTO HarmonyOS Developer Community

Dec 26, 2025 · Mobile Development

Building PromptTuner: HarmonyOS 6 Prompt Assistant App — Architecture, ArkUI Patterns & Performance Lessons

This technical case study details the end-to-end development of PromptTuner, a HarmonyOS 6 native app for prompt discovery, optimization, and management, covering three-layer architecture, ArkUI declarative UI patterns, state management, API abstraction, local analytics, privacy compliance, and measurable performance gains.