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Insight Timer vs Calm: catalog facts
Insight Timer	Calm
Freemium Large free library of guided sessions, with an optional paid membership.	Freemium Can be tried for free, with the full library in a paid subscription.
Android, iOS	Android, iOS
Large library of free guided sessions Built-in timer for unguided meditation	Large library of guided meditations and sleep content Soundscapes for relaxing or falling asleep
Proprietary service Some content is reserved for paying members	Much of the content requires a paid subscription Proprietary service that needs an account
Downloadable app, Hosted service	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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