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Valv vs Photok: catalog facts
Valv	Photok
Free Free and open source under the GPL 3.0.	Free Free and open source under Apache-2.0.
Android	Android
Encrypts files with ChaCha20 Handles images, GIFs, videos and text files	AES-256 encryption of photos and videos Files stay on the device
Android only A forgotten password means the files cannot be recovered	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
No account 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.