Second Brain is a journal for capturing thoughts and organizing plans in one place.
Capture your thoughts
Write an entry or record a voice note on your phone. Voice entries can be transcribed so you can revisit them as text.
Review your day
Browse your journal by date, search entries using text or voice, and choose to generate an AI summary of your day. Review AI-generated text for accuracy.
Keep track of tasks
Add to-dos yourself or review tasks drawn from your journal entries. Mark tasks complete as you go.
Plan with Google Calendar
Optionally connect Google Calendar to create new events from dated plans you capture. Second Brain does not read, edit or delete your existing Google Calendar events.
Find the privacy policy, terms and account deletion information in Settings.
Capture thoughts by voice or text, then review summaries and to-dos
Date de mise à jour
29 stb 2026