Synap.ing
Cognition, amplified.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Synap: your second brain, visualized.
Your best thinking shouldn't vanish into a notes app you never reopen. Synap turns everything you capture (ideas, decisions, questions, the patterns you notice) into a living knowledge graph that connects your thoughts for you and hands them back when they matter.
Write a thought and Synap links it to everything related. Search by meaning instead of exact words. Ask a real question, like "what connects my thinking on X and Y?", and get an answer drawn from your own notes, with citations to the exact thoughts behind it. Then watch it all come alive as an interactive 3D map of your mind.
Synap works with or without AI. Every surface stands on its own: capture, search, graph, analytics. Bring your own assistant when you want one, or don't. Either way, your knowledge graph is yours, and it lives on your device.
WHAT YOU CAN DO
Capture anything, in seconds
Thoughts, decisions, tasks, and open questions. By typing, by voice (transcribed on-device), from the share sheet in any app, or straight from your Apple Watch.
Find it by meaning
On-device semantic search understands what you meant, not just the words you used. Nothing to phrase perfectly, nothing to remember.
Ask your own memory
Chat with your knowledge graph using Claude, ChatGPT, or Google Gemini, or run it entirely on-device. Every answer cites the exact thoughts it was built on. Grounded in your notes, not invented.
See how you think
Explore your ideas as a 3D knowledge graph. Open Insights to see your capture rhythm, your most-active hours, where your attention has gone, and how densely your mind is wired. Synap Wrapped reveals your cognitive archetype.
Catch your blind spots
Discovery scans your graph for what you're not seeing: the unasked question, the dropped thread, the pattern forming just out of view.
Live on your home screen
Widgets for Brain Pulse, Thought Stream, Health Pulse, and Graph Growth. The Dynamic Island shows live capture and sync. There's even a built-in SSH terminal to reach your own devices over a Tailscale mesh.
PRIVATE BY DESIGN
Synap is local-first. Your graph, your semantic search, and your voice transcription all run on your device. Cloud sync is optional, and off until you turn it on. Your mind is not a data source.
FREE
The full knowledge graph, every capture surface, semantic search, the 3D graph, widgets, terminal, and themes.
PRO
Encrypted cloud sync across your devices, background sync, and hosted AI (coming soon).
Start capturing. Watch your second brain take shape.
Terms of Use: https://synap.ing/terms
Privacy Policy: https://synap.ing/privacy
Ratings & Reviews
Major speed overhaul, and many small fixes and improvements.
The developer, Robb Dixon, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Robb Dixon
- Size
- 210.2 MB
- Category
- Productivity
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 26.0 or later.
- iPhone
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Synap Pro Monthly $19.99
- Synap Pro Yearly $199.99
- Copyright
- © 2026 Synaping Inc.