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MWeb Pro vs Notenik: catalog facts
MWeb Pro	Notenik
Paid A lifetime version costs $34.99 on the MWeb Store; also available on the App Store.	Free Free with no in-app purchases, subscriptions or ads; source code under the MIT license.
macOS, iOS	macOS
Native AppKit and UIKit apps GFM with math, Mermaid and ECharts previews	Notes stored as plain text files you can open anywhere Wiki-style links between notes
Apple platforms only Paid app	Mac only Sync depends on a third-party service you set up yourself
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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