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FlowDown vs Fello AI: catalog facts
FlowDown	Fello AI
Free Available on the App Store; cloud models need your own API keys.	Freemium Free to start, with paid access for more use.
macOS, iOS	macOS, iOS
Works with any OpenAI-compatible API or local models Native Swift app rather than a web wrapper	Many AI models from one subscription Floating chat bar that works over any Mac app
Apple platforms only Cloud models require bringing your own API key	Apple platforms only Closed source and dependent on third-party model providers
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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