StemJSON: New JSON-Based Language Lets AI Build and Customize Mobile Apps On-Device

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A developer has introduced StemJSON, a domain-specific language built on JSON and designed to work with large language models for native mobile app development. The tool allows AI to generate mobile features, screens, and full applications directly on the user's device without requiring external processing. One of its key propositions is enabling end users to customize app behavior in real time through AI-driven interactions. The project was shared on Hacker News as a community showcase, inviting feedback from developers and technical users. StemJSON is positioned as a way to accelerate mobile development while opening new possibilities for personalized user experiences.

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