Compare software

Proton Drive vs Dropbox: catalog facts
Proton Drive	Dropbox
Freemium A free account is available, with paid plans for more storage and a separate business…	Freemium A small free tier is available. More storage and features require a paid plan.
Android, iOS, Web	Windows, macOS, Linux, Android, iOS, Web
End-to-end encryption that the provider cannot read Automatic photo and video backup from mobile	The most mature and reliable sync engine, with clients everywhere Smart sync keeps large libraries usable on small disks
Requires a Proton account Free tier storage is limited	The free tier is only a few gigabytes and caps linked devices Files are stored unencrypted from the provider's point of view
Downloadable app, Web application, Hosted service	Downloadable app, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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