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Scapple vs Heptabase: catalog facts
Scapple	Heptabase
Paid One-time purchase, with a free trial available.	Paid Paid subscription, no permanent free tier mentioned.
Windows, macOS	Windows, macOS, Web
Notes can go anywhere with no forced central topic Connections made by dragging one note onto another	Whiteboard and card format suits visual thinkers and complex research Cross-platform availability across desktop and web
Paid after the trial No Linux or mobile versions mentioned	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
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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