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Znote vs Heynote: catalog facts
Znote	Heynote
Free Free to download and use.	Free Free download with source code on GitHub.
macOS	Windows, macOS, Linux
Works on plain local Markdown files Runnable JavaScript code blocks inside notes	Blocks with per-block language, highlighting and auto-format Built-in calculator blocks with units and currencies
Maintained by one developer AI features depend on configuring a model provider	A scratchpad rather than a full note organiser or editor
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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