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Vienna RSS vs News Explorer: catalog facts
Vienna RSS	News Explorer
Free Free and open source under the Apache licence.	Paid Paid app with a 14-day free trial.
macOS	macOS, iOS
Smart folders assemble articles from any feed by criteria you define Native Mac application rather than a web wrapper	iCloud sync with no separate account Follows Reddit, Mastodon, YouTube and podcast feeds as well as RSS
macOS only Sync support is limited compared with commercial readers	Apple devices only Sync depends on iCloud
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
Not stated if an account is needed	No account 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 23, 2026

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