REPLACEMENT BRIEF

notes & knowledge

Can AI replace Heptabase?

EDITORIAL ANSWERYESCatalog estimate

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 estimate
Build 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.
Copy or open in an agent

The prompt stays readable first. Choose a launch option when you are ready.

$ open in your agent (prompt prefilled, you press enter) or copy it raw · suggest a correction

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

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.

what you lose

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

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.

Read the methodology →
evidence level
Catalog estimate

Editorial catalog estimate · not a completed build

replacement boundarypersonal replacement for the core loop

known limits · Visual whiteboard card-to-mindmap canvas; Split-screen PDF and audio note annotation

editorial reviewawaiting manual review

BUILD FEEDBACK

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Report the outcome. Submissions enter a manual evidence queue and never auto-upgrade the verdict.

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.