Compare software

Unread vs Vienna RSS: catalog facts
Unread	Vienna RSS
Freemium A limited free version is available. Full features require a paid subscription.	Free Free and open source under the Apache licence.
macOS, iOS	macOS
Typography and gesture navigation aimed at actually reading articles Automatically fetches full text for feeds that publish only excerpts	Smart folders assemble articles from any feed by criteria you define Native Mac application rather than a web wrapper
Subscription required for most functionality Apple platforms only	macOS only Sync support is limited compared with commercial readers
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
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 22, 2026	Official website Full listing and sources Checked September 22, 2026

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