Hjarni Notes: AI Memory
Second brain for Claude & GPT
About
This app acts as a persistent memory for AI assistants, allowing you to write notes once and have them accessible across different AI models. It organizes information in plain Markdown, supports team collaboration, and lets you control AI instructions.
What's New in Hjarni Notes
1.12.0
October 12, 2026
Press and hold a link to a note or folder to preview it, with Open, Copy link and Share. What's new is now in Settings, and the Settings tab shows a dot when there's an update you haven't read. Notes read as one column: tags sit under the title, photos show as a grid under the text, and the folder, dates and status open from Details in the top bar. The note editor's toolbar fits on one row on a phone, and the folder picker shows your folders nested under Personal.
MoreFAQ
What is Hjarni Notes?
Hjarni Notes is a productivity app designed to act as a persistent memory for AI assistants like Claude and ChatGPT. It allows users to save notes in Markdown format that AI models can access, ensuring consistent context across conversations.
How does Hjarni Notes work with AI?
You write notes in Hjarni, and then connect your AI assistants (like Claude or ChatGPT) to it. The AI can then read, understand, and utilize your notes to provide more informed responses without needing repeated context.
Can I use Hjarni Notes with multiple AI assistants?
Yes, Hjarni Notes is designed to work with various AI assistants including Claude, ChatGPT, Claude Code, Cursor, and any other client that supports the MCP protocol. This allows you to maintain a single knowledge base across different AI tools.
Is Hjarni Notes free to use?
Hjarni Notes offers a free tier with a limit on the number of notes you can store. A Pro subscription removes this limit and unlocks additional features like file attachments and email capture.
What are the benefits of Hjarni Pro?
Hjarni Pro removes the note limit, adds file attachments, enables imports, includes email capture functionality, and allows for folder collaboration with teammates. It is available as a monthly or annual subscription.
How do I manage my Hjarni Pro subscription?
Your Hjarni Pro subscription is managed through your Apple Account settings. You can turn off auto-renewal at least 24 hours before the current period ends to avoid further charges.
What devices does Hjarni Notes support?
Hjarni Notes is available on iPhone and iPad, serving as a capture and read-anywhere companion. Longer editing sessions are intended to be done on the web.
Is Hjarni Notes suitable for teams?
Yes, Hjarni Notes supports team collaboration through shared folders. This ensures that all team members' AI assistants have access to the same context, conventions, and onboarding documentation.
