Prosights.ai
Both require macOS 27 or later. Kyberna also needs Claude Code installed and signed in on the Mac; it uses that login and has none of its own.
Tag a reminder @Kyberna in any list and Kyberna does it: small asks on Apple's on-device model, in seconds, private and free; anything that needs the web, your mail, your files or careful accuracy on the model engine. The answer comes back into the same reminder and stays until you check it off. Read-only doors to Mail, Calendar, Contacts and Notes; drafts mail for you to send; a Slack channel with an allowlist; every action under rules you set in the Console.
First launch: unzip and drag Kyberna and Kyberna Write into Applications before opening them. This build is not yet signed with an Apple Developer ID, so macOS says it cannot verify the app: click Done, open System Settings › Privacy & Security, scroll to Security and click Open Anyway next to the app’s name (once per app). Then follow the short setup, which also installs the background gateway for your account.
Open any Markdown file, see it rendered as it will read, edit with bold, italic, code, links and lists, and export a PDF that looks like the rendered page. The same rendering the Kyberna Console uses for its documents, as its own app.
Write to info@prosights.com. The apps send nothing to Prosights: conversations run between your Mac and the model provider you signed in to, and this site keeps only the visit counts its host records.