Heptabase

★★★★☆4.3 / 5 editorial Paid Subscription-only after a free trial, with no free plan. Check the official site for current pricing on monthly and annual options.

Visual whiteboards for learning and deep thinking

✓ Editor-verified listing — details reviewed by Grab AI Tool editors; pricing re-checked regularly.

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#visual thinking#whiteboard#research#note taking#pdf annotation

What is Heptabase?

Heptabase is built for understanding complex topics visually. You capture sources as cards - PDFs, highlights, notes, media - then arrange them on infinite whiteboards, connecting ideas spatially. An AI chat can question your boards and sources, and PDF annotation happens in place. It targets researchers, students and writers who think in maps rather than lists, and it shows.

Boards can nest inside cards, giving projects both a map view and deep detail, while tags and a global card library keep big collections navigable. Sync, offline access and mobile apps cover field research. Heptabase is a focused solo-thinking tool: collaboration exists but is light, and there is no free plan - the trial has to convince you the visual method fits.

Key Features

Infinite whiteboards with nested cards
In-app PDF reading and annotation
AI chat grounded in your sources
Card library with tags and search
Offline access and cross-platform sync

Pros

Best visual thinking environment in its class
PDF workflow is excellent for research
Boards make complex topics graspable

Cons

No free plan
Collaboration is limited
Visual method won't suit list thinkers

Pricing

Model: Paid
Subscription-only after a free trial, with no free plan. Check the official site for current pricing on monthly and annual options.

Adding Up Your AI Bill?

If you pay for Heptabase alongside other AI subscriptions, the monthly total adds up quietly. Tick every tool you pay for in our free AI Tool Cost Calculator to see your real monthly and yearly bill — and spot overlaps you can cut. Still choosing? Start with our guide on how to choose the right AI tool.