System-Wide AI Autocomplete (macOS)

Typing in every app is slow. This macOS app adds AI-powered autocomplete and text suggestions across all applications using local LLMs. Users get smarter typing without sending data to the cloud. Target: power users, professionals, developers who want privacy-first AI assistance.

Apple's system-level accessibility APIs have matured enough to make cross-app text interception reliable, and local LLM inference on Apple Silicon (via llama.cpp and similar) is finally fast enough to not ruin the typing experience — both of these converged in the last 18 months. The closest substitute is Raycast AI or GitHub Copilot for specific contexts, but neither operates system-wide across arbitrary apps. The $2k–8k/mo revenue band is plausible as a $10–15/mo subscription targeting a few hundred privacy-conscious power users, though it's a ceiling, not a floor — churn will be high if latency is even slightly noticeable. The biggest risk is Apple itself: macOS updates routinely break accessibility-layer hacks, and Apple is actively building its own on-device AI features into the OS, which could make this obsolete or simply get outcompeted by a free system feature within two release cycles.