Vesper.

Everything you expect from a modern AI assistant, running entirely on your iPhone in a clean paper-and-ink design. Ask questions, search the web, analyze photos and documents, dictate with your voice, and build interactive tools right in your chat. Vesper's AI models run on your device, so there is no account to create, no subscription, and no cloud server reading what you write. Draft emails, summarize documents, write code, or work through hard questions offline or online. When you want current information, turn on Web search and Vesper searches DuckDuckGo and Wikipedia, reads the pages on your iPhone, and answers with sources. Ask for a calculator, a timer, a chart, or a small tool and watch Vesper write it live onto a sheet of paper that runs offline inside your conversation. Attach a photo, scan, or document and Vesper reads the words and looks at the image itself. Tap the microphone beside Send and speak naturally to transcribe your voice on your phone. Vesper can also add reminders and calendar events with your confirmation, and keep short notes on what matters to you—updating its memory automatically when facts change. You choose the model and thinking depth that fit the job. Glyph gives fast, everyday answers that go easy on your battery. Quire takes a longer breath for harder questions. Codex is the largest model, built for complex work when you can wait. Set Effort to Fast, Balanced, or Thorough, or turn on Auto and let a stronger installed model step in only when a question calls for it. Set in crisp New York serif over warm paper and clear glass, Vesper reads like ink on a page, day or night, with a Warm Light mode that cuts harsh blue light. On a standard iPhone, Vesper keeps a focused single column and opens into a multi-pane desk when turned sideways on larger models. On iPhone Duo, Vesper adapts to how you hold it: use it closed on the cover screen, hold it half-open like a book with your chat on the right page and your sidebar or pages on the left, or unfold it flat into a full side-by-side workspace. Vesper is private from the start. There is no sign-in, no tracking, and Vesper's App Store privacy label is Data Not Collected. Web search, location, and calendar access stay off until you turn them on.