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Castbox vs Overcast: catalog facts
Castbox	Overcast
Freemium A free ad-supported tier is available. Premium is a paid subscription.	Freemium Free with an optional Premium subscription supporting the developer.
Android, iOS, Web	iOS
In-audio search finds spoken phrases inside episodes Works on phones, web, Alexa, CarPlay and Android Auto	Smart Speed and Voice Boost meaningfully improve the listening experience Free with no feature paywall for core playback
Advertising and recommendation-heavy interface on the free tier Closed source	Apple platforms only, no Android or web version Podcast discovery is more limited than some competitors
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 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.