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MWeb Pro vs iA Writer: catalog facts
MWeb Pro	iA Writer
Paid A lifetime version costs $34.99 on the MWeb Store; also available on the App Store.	Paid A paid purchase or subscription is required, depending on platform.
macOS, iOS	Windows, macOS, Android, iOS
Native AppKit and UIKit apps GFM with math, Mermaid and ECharts previews	Syntax control highlights adjectives, conjunctions and filler words Plain Markdown files in your own folders, with no proprietary library
Apple platforms only Paid app	Paid on every platform, with separate purchases in places Deliberately few features; it is not an organiser or notebook
Downloadable app	Downloadable app
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 October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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