Synap.ing
Cognition, amplified.
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Your second brain, visualized. Capture decisions, patterns, and insights into a knowledge graph that thinks with you — not just stores for you.
Synap — your second brain.
Capture thoughts, decisions, and patterns into a living knowledge graph. Search by meaning, not just keywords. See your thinking visualized in 3D.
• Cortex Dashboard — your daily cognitive briefing with streaks, threads, and signals
• AI Chat — talk to your knowledge graph with Claude, OpenAI, Gemini, Grok, or Ollama
• 3D Knowledge Graph — interactive visualization of how your ideas connect
• Semantic Search — find thoughts by meaning using on-device vector embeddings
• Penumbra — AI blind spot detector that finds what you're missing
• Cognitive Archetype — discover your thinking style with Synap Wrapped
• Widgets — Brain Pulse, Thought Stream, Health Pulse, Graph Growth on your home screen
• Dynamic Island — live sync status and capture progress
• SSH Terminal — connect to your devices via Tailscale mesh
• Voice Capture — speak your thoughts, transcribed on-device
• Share Extension — capture from any app
• Apple Watch — quick capture and brain pulse complication
Privacy first: everything works locally. Cloud sync is optional.
Free: Full knowledge graph, all capture surfaces, semantic search, widgets, terminal, themes
Pro: Cloud sync across devices, background sync, hosted AI (coming soon)
Terms of Use: https://synap.ing/terms
Privacy Policy: https://synap.ing/privacy
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
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
- Provider
- Robb Dixon
- Size
- 99.3 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 USD 19.99
- Synap Pro Yearly USD 199.99
- Copyright
- © 2026 Arc Labs Holdings Inc.