Privacy

Updated October 23, 2026. Presento SI is made by Epiphani Studios.

Your documents

Every Presento SI document is a folder on your Mac that you choose and own: the HTML, its images, its script and its version history. We don't collect your documents or your prompts.

The AI agent

You choose who does the work in Settings, AI. With Claude Code, Presento SI runs Claude Code on your Mac, signed in to your own Claude plan, under your agreement with Anthropic. With your own API key, Presento SI sends your request and the pages it works on to Anthropic or OpenRouter, under your agreement with them; the key stays in your Mac’s keychain.

With Presento SI AI, your request and the pages it works on pass through our gateway to OpenRouter, which serves Anthropic’s Claude models. The gateway checks your Epiphani account sign-in and records your account ID, the time, the model, and the cost of each request, for billing. It keeps no request, page, or reply text.

Usage counts in the app

Presento SI records which features you use, as a feature name and a time, in a file in your Library folder, so we can see which features earn their place. It holds no document text, prompts, file names or account details.

Updates

To check for updates, Presento SI reads a public feed at updates.belstone.com when it opens and every six hours.

This website

presento.si sets no cookies. It counts a few page events, such as a click on Download, as anonymous daily tallies with no identifier attached. If you join the Presento SI AI list, we keep the email address you give and the date, and use it only to tell you when Presento SI AI opens.

Contact

Questions: hello@epiphani.studio.