How can we help?

What is CogniLog?

A native Mac and iPhone work log for anything worth remembering. You write down the thinking behind your work in plain text, then find it again later by looking back across a day, a week, or a whole year, by searching, or by asking your AI assistant through the built-in MCP server.

What do I need to run it?

iOS 26 or macOS 26, or later. CogniLog relies on newer system features, so earlier versions aren’t supported.

Is my data private? Where is it stored?

Your log is stored on your own devices. We don’t run servers that hold your entries, and we can’t read them. If you turn on sync, it moves between your devices through your own iCloud account, never through us. See the Privacy Policy.

How does the AI connection work?

CogniLog includes an MCP (Model Context Protocol) server. You connect an AI tool you already use, like Claude, and it can read your log to answer questions about your past work. It runs only when you start it, and only responds to the tools you point at it. If you never connect one, nothing is shared. Whatever AI tool you connect operates under its own privacy terms.

How do I set it up?

CogniLog ships the MCP server as a helper inside the app, at /Applications/CogniLog.app/Contents/Helpers/cognilog-mcp. To connect it, add that path as an MCP server in your AI tool’s config. In Claude Code, add it under mcpServers in ~/.claude.json with the command set to that path; Cursor and other tools use the same command in their own MCP settings.

Keep the CogniLog app installed and running so the server can reach your log. Email support if you get stuck.

Does sync work between my Mac and iPhone?

Yes, over iCloud, if you enable it. Add an entry on one device and it appears on the other. Both devices need to be signed into the same iCloud account with iCloud Drive on.

Can I get my data out?

Always. Export your whole log, or a filtered slice, to a file you can import again later, straight from the Mac app (File then Export). Your entries also export as plain Markdown. No lock-in.

What can I import?

CogniLog has built-in importers for Apple Notes, Day One, Obsidian, and Bear, so you can bring your existing notes across through File then Import. Any plain Markdown files work too, so if another app can export Markdown, its notes can come in as well. You can also restore a CogniLog backup file the same way. More sources over time.

Is CogniLog free?

Yes, free to download and use. If pricing ever changes down the road, it won’t change for the people already here.

I found a bug or have a feature request.

Please tell us. Email support@rivetrune.com with your device and OS version and, if it’s a bug, the steps to reproduce it. In a TestFlight build you can also shake your phone to send feedback.

Is there an iPad or Apple Watch app?

iPhone and Mac are the focus for the first release. An iPad layout is planned for later.