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End-to-end encryption is the point and the price. Throughout this review we weigh it against Dropbox.
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✓ Pricing re-verified 26 Aug 2026
Proton Free gives 5 GB. Drive Plus is $3.99 a month for 200 GB, marked 20% off $4.99 and billed at $47.88 every twelve months. Proton Unlimited is $9.99 for 500 GB and folds in the VPN, Mail and Calendar, billed at $119.88 a year.
Read on 17 August 2026 from a Dutch address, so in euros: Free gives 5 GB; Drive Plus is €3.99 a month on annual billing (€47.88 a year) for 200 GB; Proton Unlimited is €9.99 (€119.88) for 500 GB plus VPN, Mail, Calendar and Pass. The page switches between CHF, EUR and USD, so your figure depends on where you buy.
Proton Duo, which our previous write-up missed entirely: 2 TB shared across up to 2 users at €14.99 a month on annual billing (€179.88 a year), against €9.99 for Unlimited's 500 GB for one. For a household of more, Family gives 3 TB across up to 6 users at €23.99. For a business it is Drive Professional at €7.99 per user for 1 TB each.
It is 5 GB, which is enough to try the encryption and the document editor and not much else — a phone's photo roll will fill it. What you do get free is the full end-to-end encryption and the online document and spreadsheet editor, so it works as a genuine trial of the privacy model rather than a crippled demo.
Judge it on evidence rather than adjectives. Look for a published security page, single sign-on and role controls on the plan you would actually buy (they are often gated to higher tiers), a status page with real incident history, and a clear answer on where your data is stored. If the tool will hold anything sensitive, those four answers matter more than any feature comparison.
This is a researched assessment, not a hands-on test — where we've used a tool ourselves, we say so explicitly. We name what each tool is good and bad at, and we earn a commission only if you sign up, at no cost to you.
Reviewed it & productivity tools that share ground with Proton Drive — comparable in what they do, not drop-in swaps:
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This is our researched assessment — not a paid placement. The “Visit” links on this page are affiliate links: we may earn a commission if you sign up, at no extra cost to you, and it never changes our take. How we review →