SundayAI

A private AI assistant that runs entirely on your iPhone. See photos, hear voice notes, watch videos, read PDFs, and get live answers — on device, private, and anywhere.

Sunday is a private AI assistant that runs entirely on your iPhone.**

No account. No sign-up. Your conversations and files never leave your device — the AI model runs locally, making assistance available anytime, anywhere. Given permission, Sunday can pull information from the internet to aid with live answers, at your discretion.

What Sunday can do: • Chat — ask anything and get thoughtful, natural answers • See — analyze photos from your camera or library • Hear — transcribe and understand voice notes and audio, including long recordings • Watch — describe and summarize videos • Read — answer questions about PDF documents • Look it up — live web search for news, scores, and prices • Local information — current weather and time for wherever you are • Calculate— accurate math, on demand • Remember — Sunday keeps context during extended conversation • Thinks it Through —turn on Thinking Mode for step-by-step reasoning • Human Knowledge — an optional on-device knowledge base for answers without a connection

Everything runs privately, on your device, at your pace.

Knowledge for the frontier.