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QUIK vs Clear SMS: catalog facts
QUIK	Clear SMS
Free Free and open source under the GPL-3.0.	Free Free and open source under Apache-2.0.
Android	Android
Scheduled and delayed messages Built-in message backup	Sorts messages with rules users can inspect and edit Extracts transactions and upcoming bill information
Handles SMS and MMS only, which are not end-to-end encrypted Android only	Android only Requires the default SMS app role for full messaging
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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