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Fiery Feeds vs Vienna RSS: catalog facts
Fiery Feeds	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
Supports an unusually long list of sync back ends Smart views and hot links surface what is worth reading	Smart folders assemble articles from any feed by criteria you define Native Mac application rather than a web wrapper
Most features require the paid subscription 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.