Loci - Private, Local AI

Private AI that runs entirely on your iPhone — no account, no cloud, no subscription. Loci automatically picks the right on-device model for your hardware, so powerful AI just works, even in airplane mode. Your conversations never leave your device.

A genuinely private ChatGPT alternative: free, offline, and yours.

WHY LOCI • No setup, no jargon — Loci detects your device and picks a model that runs smoothly. No guessing about RAM or quantization. • Works offline — download a model once over Wi-Fi, then chat in airplane mode with no internet. • Truly private — every message and every model runs on-device. No account, no trackers, nothing uploaded. • Free — no subscriptions, no paywalls.

POWERFUL ON-DEVICE MODELS Download leading open-source models — Google's Gemma 4, Qwen 3.5, Llama 3.2, and more — all running locally on your iPhone. Browse additional models anytime; Loci only offers what your device can actually run.

UNDERSTANDS YOUR PHOTOS Attach a photo and ask about it. Loci reads text, describes scenes, and answers questions about images — on device.

SMART TOOLS, NOT JUST CHAT • A calculator that actually computes • Unit conversions and date/time awareness • Reminders and Calendar integration (create and edit) • On-demand web search via DuckDuckGo (opt-in) • Cross-session memory that remembers your preferences

HANDS-FREE VOICE MODE Tap the waveform to talk naturally. Loci replies aloud and listens for your next question — all speech stays on device.

FOCUS MODES General, Coding, Writing, Study, and Brainstorm — specialized help for the task at hand.

APPLE SHORTCUTS Use Loci in your automations: ask, calculate, or convert from any Shortcut.

BETTER FOR THE PLANET Cloud AI burns electricity and water in data centers on every query. Loci runs on hardware you already own — no data center, no extra water or carbon. Powerful AI that's kinder to the planet.

Private. Offline. Free. AI the way it should be — on your device, under your control.