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Comparison · 2026
Heptabase vs Mermaid Chart
Heptabase vs Mermaid Chart: side-by-side comparison of pricing, ratings, and features on SoftwareVital (2026).
Pricing models differ: Heptabase is freemium, Mermaid Chart is free. Feature lists share 0 overlapping items across the two listings.
freemium
Heptabase is a visual note-taking app with whiteboards, PDF highlighting, and YouTube transcripts for research and study.
VS
free
Mermaid Chart is a collaborative AI diagram generator that builds flowcharts, sequence diagrams and Gantt charts from text-based code.
Side-by-side
| Attribute | Heptabase | Mermaid Chart |
|---|---|---|
| Rating | — | — |
| Reviews | — | — |
| Pricing | freemium · $11.99 | free |
| Votes | 0 | 0 |
| Category | AI Knowledge Management | AI Charting |
Features checklist
| Feature | Heptabase | Mermaid Chart |
|---|---|---|
| Unlimited notes | ||
| whiteboards | ||
| and tags | ||
| Unlimited file uploads | ||
| Unlimited invites for collaborators | ||
| Unlimited published sites | ||
| Real-time syncing across web | ||
| desktop | ||
| and mobile app | ||
| PDF highlights | ||
| Youtube transcripts | ||
| AI insights | ||
| and more | ||
| Collaborative diagramming tool using text-based code and AI for visualizations |