Researchers pay for the thinking environment — cards on whiteboards, PDF annotation, and sync — because a canvas with notes is a board and a sense-making system is the product.
REPLACEMENT BRIEF
notes & knowledge
Can AI replace Heptabase?
Whiteboards with cards for research notes is genuinely buildable — cards plus a canvas. The product's edge is the sense-making workflow: the card-whiteboard model tuned for research, PDF annotation, and sync — the thinking environment, not the board.
Build a local-first visual knowledge mapping app with fast capture, full-text search, backlinks, tags, and Markdown export.
Build the personal version →AT A GLANCE
- price
- $8.99/mo
- listed annual price
- $107.88/yr
- replaceable scope
- personal replacement for the core loop
- build time
- one sitting
Build promptcatalog estimate
the prompt
Catalog estimateBuild a usable personal replacement for the core loop of Heptabase. Use exactly this stack: Tauri 2 + React + TypeScript + SQLite. Primary job: Build a local-first visual knowledge mapping app with fast capture, full-text search, backlinks, tags, and Markdown export. Start from an empty folder and create the complete working project. Make the default mode single-user and private. Store user data locally unless the core job requires the declared self-hosted database. Do not add analytics, telemetry, ads, or third-party accounts. Put every secret and external credential in .env and provide .env.example. Use realistic sample data that is clearly labelled and easy to delete. Implement the smallest polished interface that completes the core loop end to end. Include clear empty, loading, validation, success, and failure states. Add import and export so the user is not trapped in the app. Use accessible keyboard navigation, labels, focus states, and sensible contrast. Validate untrusted input and never log secrets or private file contents. Deliberately exclude these paid-product advantages: conflict-safe multi-device sync; mature importers and exporters; collaborative editing and sharing. Do not fake integrations, network effects, proprietary data, model quality, compliance, or security claims. Where an external API is optional, keep the app useful without it and explain the degraded mode. Write focused unit tests for the data model and the most important workflow. Add one end-to-end smoke test that proves the core loop works. Create a README with setup, permissions, architecture, data location, backup, and limitations. Add scripts for install, development, test, build, and a production-style local run. Run the tests and build before finishing, then fix errors rather than merely describing them.
The prompt stays readable first. Choose a launch option when you are ready.
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what AI can build
Build a local-first visual knowledge mapping app with fast capture, full-text search, backlinks, tags, and Markdown export.
Editorial catalog estimate · not a completed build
The honest tradeoff
why people still pay
what you lose
xVisual whiteboard card-to-mindmap canvas
xSplit-screen PDF and audio note annotation
xBi-directional card linking across whiteboards
xOffline-first desktop synchronization engine
xStructured research tags and properties
Start with existing software
prior art · use these instead of building, if you'd rather
EVIDENCE LEDGER
What this page can prove
The verdict judges replaceability. The evidence level records what DeepFeather actually checked.
Editorial catalog estimate · not a completed build
Pro · per month billed annually
known limits · Visual whiteboard card-to-mindmap canvas; Split-screen PDF and audio note annotation
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questions
Can AI replace Heptabase?
Likely for the core workflow, based on an editorial catalog judgment. This entry is not a verified build yet; use the prompt as a starting point and validate the result against your own acceptance criteria.
How much does Heptabase cost?
Heptabase is listed at about $8.99/month (Pro, checked 2026-07-31), or $107.88 per year. This is a pricing reference, not evidence of a completed replacement or realized savings.
What do I lose by replacing Heptabase?
Honestly: Visual whiteboard card-to-mindmap canvas; Split-screen PDF and audio note annotation; Bi-directional card linking across whiteboards; Offline-first desktop synchronization engine; Structured research tags and properties. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Heptabase?
Yes — AppFlowy (Local-first open-source workspace with documents and databases.), Logseq (Open-source local knowledge graph and outliner.). Using prior art is also a valid exit; the prompt is for when you want it exactly your way.