Private LLM is a one-time-purchase app that runs open-source large language models entirely on-device across iPhone, iPad, and Mac with no internet connection required after the initial model download. It supports models including DeepSeek R1, Llama 3.3, Qwen3, Phi 4, and Gemma 3, using OmniQuant and GPTQ quantization for higher output quality than comparable apps. Private LLM integrates with Siri and Apple Shortcuts to enable no-code AI workflows, and offers macOS right-click writing tools for rewriting, summarising, or correcting selected text. No account, no tracking, no subscription, and Family Sharing is included for up to six people.