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Tulsi Gallery vs Iris Gallery: catalog facts
Tulsi Gallery	Iris Gallery
Free Free and open source under the GPL-3.0 licence, with no ads.	Free Free and open source under the Apache-2.0 licence.
Android	Android
No data collection or ads Open source and available on F-Droid	No internet permission at all Live detection of new photos and downloads
Android only No cloud backup or sync described	Android only Local viewer with no cloud backup or sync
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	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 2, 2026

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