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Zazen Meditation Timer vs Insight Timer: catalog facts
Zazen Meditation Timer	Insight Timer
Free Free and open source under the MIT licence.	Freemium Large free library of guided sessions, with an optional paid membership.
Android	Android, iOS
Sessions made of several timed sections Bell sounds mark each transition	Large library of free guided sessions Built-in timer for unguided meditation
Android only Focused on timing; no guided meditations or statistics mentioned	Proprietary service Some content is reserved for paying members
Downloadable app	Downloadable app, Hosted service
Open source	Closed source
License: MIT	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 October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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