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Wolf Gallery vs Photok: catalog facts
Wolf Gallery	Photok
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under Apache-2.0.
Android	Android
Every file stored encrypted in private app storage Works offline	AES-256 encryption of photos and videos Files stay on the device
Android only Files live inside the app, so other galleries cannot see them	Android only Losing the password can mean losing access to the files
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
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.