The AI note-taking app that shows its sources
Second Brain Box is an AI note-taking app for notes, journal and projects. Ask anything about what you have written and get an answer with sources – while your data stays private.
Ask your notes
Get answers from your notes and journal with numbered sources you can open.
Thinking partner
Chat that remembers the conversation, asks clarifying questions and helps weigh decisions.
Evening journal summary
Each evening the AI can add a short summary of your day to the journal.
Daily insights
Every morning it looks for connections, contradictions and things about to be forgotten.
Voice capture
Dictate on your phone or Apple Watch – the AI files it for your approval.
You stay in control
The AI proposes, you approve. Nothing changes behind your back.
Frequently asked questions
What makes it an AI note-taking app?
You can ask questions about your own notes and journal and get answers with numbered sources. A thinking partner chat helps you reason through decisions, and daily insights point out connections and forgotten items.
Does the AI change my notes?
No, not on its own. The AI proposes changes and you approve them. Learned rules and sensitive topics always need your approval. The only exception is the optional evening journal summary.
Who can see my notes?
Only you. Other users and administrators cannot read your notes.
How much does it cost?
Free includes 20 AI questions per month. Plus costs 7 € per month or 60 € per year and includes 300 AI questions per month, with a 14-day trial.
Can I export my data?
Yes. Download everything as Markdown files in a ZIP at any time.