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Tinderbox vs Heptabase: catalog facts
Tinderbox	Heptabase
Paid Paid app that can be downloaded and tried before ordering.	Paid Paid subscription, no permanent free tier mentioned.
macOS	Windows, macOS, Web
Visual map views for arranging notes Documents can organize themselves with rules	Whiteboard and card format suits visual thinkers and complex research Cross-platform availability across desktop and web
Mac only Paid	Paid subscription required to use Visual, card-based workflow takes longer to set up than plain text notes
Downloadable app	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.