SecondBrain
Build your second brain just by talking, now on the web too
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New since our June launch: SecondBrain is rebuilt around your voice, and it now runs in your browser too. Tap and talk: it writes a clean note in your words, files it, and turns dates into events and reminders. No time given? It asks. Share links, PDFs and photos from any app, then watch it work live. Ask anything and the answer streams from your notes. Pro adds one shared memory for Claude, ChatGPT, Gemini and Cursor over MCP. iPhone, Android and web. Free: 10 notes and 3 AI requests a day.
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More like this: all 208 launches in note-taking and writing apps →
PH · launched Oct 27, 2026 · 3 upvotes (top 10%)
- Horizontal
- Agent / copilot
- B2C
- AI-native
- Commercial product
- Android
- Productivity
- Notes
- Artificial Intelligence
Similar launches
See all 276 similar launches →Could you build this?
Yes Voice capture, transcription, LLM-based note cleanup, calendar event creation, and share-sheet ingestion all map onto existing speech and LLM APIs with a standard app stack.
Competitors
Other products that read as similar to this one : 276 launches clear the similarity bar, closest 8 shown.
Attention rank: #50 of 277 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 342 days after the earliest competitor.
- Second Brain · ph · 2026-09-10 · 1 upvotes · similarity 0.56
- SecondBrain Note by GenSpark · ph · 2026-08-10 · 218 upvotes · similarity 0.56
- AI Operator's Build Your AI Second Brain · ph · 2026-10-13 · 1 upvotes · similarity 0.49
- WhisperBrain · ph · 2026-09-30 · 65 upvotes · similarity 0.46
- Nave · ph · 2026-10-17 · 2 upvotes · similarity 0.46
- Duncan — your WhatsApp second brain. · ph · 2026-09-11 · 1 upvotes · similarity 0.45
- Notes · ph · 2026-10-21 · 1 upvotes · similarity 0.44
- Second Brain for AI · ph · 2026-05-31 · 284 upvotes · similarity 0.43