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Photok vs Valv: catalog facts
Photok	Valv
Free Free and open source under Apache-2.0.	Free Free and open source under the GPL 3.0.
Android	Android
AES-256 encryption of photos and videos Files stay on the device	Encrypts files with ChaCha20 Handles images, GIFs, videos and text files
Android only Losing the password can mean losing access to the files	Android only A forgotten password means the files cannot be recovered
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0-only
Not stated if an account is needed	No account 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.