Think freely.
Map beautifully.
Start now.

An interactive mind-mapping app with AI-powered brainstorming, 5 layout algorithms, and full offline support. Bring your maps across from XMind. Runs in your browser — no install, no account.

Open MindMap — Free See Features
No account needed Works offline AI built in Install as desktop app
Nervespan MindMap — a complex mind map with balanced layout on dark theme

Everything you need to think visually

Powerful enough for complex projects. Simple enough to start in seconds.

AI-Powered Brainstorming

Expand any node with AI-generated ideas. 20 free calls per day — no API key needed. Bring your own key for unlimited.

5 Layout Algorithms

Top-down, left-to-right, balanced, radial, and fishbone. Auto-layout keeps your map tidy as you think.

15 Visual Themes

From dark synthwave to clean blueprint. Centrality-based colouring makes important nodes stand out automatically. 5 themes free, all 15 with Pro.

Canvas + Outliner

Switch between visual canvas and structured outline. Both fully editable, always in sync. Think however suits you.

Offline-First & Private

Your maps live on your device as human-readable JSON. No cloud required. No account needed. No tracking. Works on a plane. Optional cloud sync when you want it.

Keyboard-First

Enter for siblings, Tab for children, F2 to edit. Full shortcut coverage. Fly through your maps without touching the mouse.

Also included in the free tier:

✓ 10 starter templates ✓ Cross-link arrows (non-hierarchical) ✓ Focus / drill-down mode ✓ In-document search (⌘F) ✓ Rich-text node notes ✓ Node images & icons ✓ Boundary grouping (⌘G) ✓ Import: XMind, OPML, FreeMind, Markdown ✓ Export: PNG, Markdown, OPML ✓ AI text-to-map (10,000 chars) ✓ Per-node text styling (B/I/U) ✓ Minimap navigation ✓ Collapse/expand branches ✓ Auto-save every 30 seconds ✓ Undo/redo ✓ URL attachments on nodes

Pro adds the remaining 10 themes and 23 templates, plus unlimited synced devices — see what's in Pro.

Your map, your style

15 themes from dark synthwave to warm corkboard — 5 free, all 15 with Pro. Centrality-based colouring makes important nodes stand out automatically.

Terminal theme — neon green on black with cross-link connections

Terminal theme

Corkboard theme — warm parchment with cross-links and labels

Corkboard theme

AI that works out of the box

No API key needed. No setup. Just select a node and let AI expand your thinking. 20 free calls per day, processed in EU data centres.

🧠 Expand with ideas

Select any node → AI suggests 4-6 child nodes. Review, edit, accept, or reject each suggestion before committing.

📄 Text to map

Paste an article, notes, or transcript → AI proposes a structure. Edit the outline before the map is created. Up to 10,000 characters on the free AI, or no limit with your own key.

📝 Summarise a branch Coming soon

Condense an entire subtree into a single paragraph. Perfect for extracting key points from complex maps.

🔗 Suggest connections Coming soon

AI analyses your full map and suggests cross-links between related but unconnected ideas.

Privacy-first: AI processed in EU data centres (France). No data stored. Bring your own API key for unlimited — also free.

Simple pricing

Free for core mind mapping. Pro when you're ready to do more.

Free

No account needed. No limits on maps.

$0 — no account needed
  • ✓ Unlimited mind maps
  • ✓ 5 themes, 10 templates
  • ✓ All 5 layout algorithms
  • ✓ Canvas + Outliner
  • ✓ 20 AI calls/day + BYOK unlimited
  • ✓ Import: XMind, OPML, FreeMind, Markdown
  • ✓ Export: PNG, Markdown, OPML
  • ✓ Cloud sync (2 devices)
  • ✓ Any device with a browser
Open Free
Coming Soon

Pro

For power users who want more.

$3.99 /month

or $29.99/year · Lifetime: $79.99

  • ✓ Everything in Free, plus:
  • ✓ All 15 themes, all 33 templates
  • ✓ Unlimited devices
  • ✓ Version history — recover from any sync conflict (30 days)
  • ✓ Export: PDF, interactive HTML
  • ✓ Presentation mode
  • ✓ Task mode (due dates, priority)
  • ✓ Global cross-document search

Start mapping in seconds

Nervespan MindMap runs in your browser — no download, no account, no setup. Install it as a desktop app with one click for the full offline experience.

Open Nervespan MindMap

Install as a desktop app

For a native-feeling experience with its own window and dock icon:

Chrome / Edge Click the install icon (⊕) in the address bar, or Menu → "Install Nervespan MindMap"
Safari (macOS) File → "Add to Dock" (macOS Sonoma+)

Works on Windows, macOS, Linux, ChromeOS, Android, and iOS/iPadOS.

Get notified at launch

We'll email you once when Pro launches. Nothing else.