Ironsmith creates macOS apps from prompts, runs on 8GB Macs with local AI

Ironsmith, built by Reddit user pizzaisprettyneato, is an open‑source macOS tool that turns a simple text prompt into a fully compiled native macOS app. The key innovation is a custom agentic loop designed for small models with limited context windows. Instead of iterative generation, the model produces the entire app at once, then the system runs repeated formatting, linting, and deterministic repairs until the code compiles. This approach works reliably even on an 8GB MacBook Air using models as small as Gemma 4 E2B, though larger models (like Gemma 4 26B with 4B active) produce higher‑quality results with fewer errors.

Ironsmith supports local providers via Ollama and any OpenAI‑compatible API, plus cloud options like GPT, Claude, and Gemini when an API key is provided. The developer emphasizes that smaller models require more repair passes, but the secret sauce is fixing hallucinations and syntax errors automatically. While still in beta, the tool already lets non‑developers create simple but highly personalized utility apps without writing a single line of code. The project is available on GitHub and ironsmith.app, with security details and usage instructions in the original Reddit post.