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Proton Drive vs PhotoSync: catalog facts
Proton Drive	PhotoSync
Freemium A free account is available, with paid plans for more storage and a separate business…	Freemium The desktop Companion tool is free; the mobile apps offer paid features.
Android, iOS, Web	Windows, macOS, Linux, Android, iOS
End-to-end encryption that the provider cannot read Automatic photo and video backup from mobile	Transfers in full resolution with metadata intact Works over local Wi-Fi without a cloud
Requires a Proton account Free tier storage is limited	Closed source Pricing of the mobile apps not clearly stated on the homepage
Downloadable app, Web application, Hosted service	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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