IN THE FIELD GUIDE
trybrainos
trybrainos.app
BrainOS is a desktop app for macOS and Windows that integrates mind maps, notes, todos, habits, bookmarks, and projects into one private second brain running locally on your machine. It uses your own AI key to provide an assistant named Jarvis that can access all your data without uploading it to the cloud.
THE PRODUCT, BEYOND THE PITCH
Editorially reviewed · Sources checked Sep 12, 2026
A good fit for
- Users who want a private, local second brain integrating multiple productivity tools without cloud syncing
Know the limitations
- No cloud syncing or account system; data is stored only locally
- Requires users to provide their own AI subscription keys to use AI features
What you can do
Not confirmed yet.
Features
- Mind maps with nodes that open into full markdown editors and support folding, undo history, and JSON backup
- Habit tracker with daily habits and streaks mirrored to markdown files
- Todo list with priorities and due dates that Jarvis can manage
- Project manager with Kanban boards and activity feed
- Learning planner for multiple subjects with adaptive daily plans
Integrations
Not confirmed yet.
Platforms & data export
Not confirmed yet.
THE COST FOR YOUR TEAM
Go beyond the starting price.
Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.
Known monthly subtotal
$0.00/month
1 of 1 tools could not be priced with these inputs, so this is not the full cost.
| Tool / plan | Monthly | Per year | What this assumes |
|---|---|---|---|
| No pricing recorded yet. Check the official site, or ask the owner to add it. | |||
A practical workflow
- Install BrainOS on macOS or Windows, then point it at your notes folder or vault to import and index your data
- Use the canvas to create mind maps by double-clicking nodes, connecting them, and editing markdown content
Based on the sources below. Editorial review does not imply hands-on product testing.
Alternatives to explore
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