Endemic: Local On-Device AI

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Endemic by Folding Sky Co is a privacy-focused application that executes large language models locally on iOS and macOS devices. Unlike cloud-based AI services, Endemic processes prompts and generates responses using the device’s CPU and GPU, ensuring data never leaves the hardware unless explicitly synced via iCloud. The app features a curated catalog of open-weight GGUF models, including Qwen 3.5 (free) and Google’s Gemma 4 (available via Endemic Pro subscription). Model selection is filtered by available memory, recommending 0.8B to 9B variants based on whether the user has an iPhone, iPad, or Mac. Key capabilities include local web search and browsing tools that fetch current information directly from the network without proxying through a server, as well as vision support for analyzing attached images offline. The interface allows users to switch models dynamically and organize conversations into folders with the Pro tier. Built by a single developer in Reno, Nevada, Endemic emphasizes transparency and user control over AI interactions.