Koofr vs Proton Drive
Price, platforms and features side by side. The table says where each price was read and when.
Koofr
EU cloud storage that also connects Dropbox, Google Drive and OneDrive
Proton Drive
End-to-end encrypted cloud storage from the maker of Proton Mail
Where they differ
- Koofr starts at €0.50 per month for 10 GB extra, billed yearly, incl. 22% VAT. Proton Drive starts at $3.99 per month, billed yearly.
- Only Koofr lists a Linux app.
- Only Koofr lists a browser extension.
- Proton Drive is open source and end-to-end encrypted, according to its own site.
- Proton Drive also covers documents and spreadsheets.
At a glance
| Koofr | Proton Drive | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | €0.50 per month for 10 GB extra, billed yearly, incl. 22% VAT | $3.99 per month, billed yearly |
| Free plan | Free forever: 10 GB with two-way sync, mobile media backup, file versioning and 1 Vault Safe Box. Capped at 10 public links that expire after 14 days, with 7 days of deleted file retention. | Proton Free: 5 GB of end-to-end encrypted storage for files, photos and documents, including the online document and spreadsheet editor. |
| Free trial | None listed | None listed |
| Web | ||
| macOS | ||
| Windows | ||
| Linux | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | Koofr d.o.o. | Proton AG |
| Price read from | koofr.eu | proton.me |
| Checked | Oct 5, 2026 | Oct 5, 2026 |
Who each one suits
Koofr
- People who need a small paid plan: sizes start at 10 GB extra
- Users who want Dropbox, Google Drive and OneDrive files in one place
- Buyers who want EU-hosted storage without trackers or ads
- Linux, WebDAV and rclone users
Proton Drive
- People who want encrypted storage under Swiss jurisdiction
- Proton Mail, VPN or Pass users who can bundle storage with Unlimited
- Private collaboration on documents and spreadsheets
Worth knowing
Koofr
- Prices are in euros and include 22% VAT, so the final amount depends on the buyer's country. Only yearly subscriptions are sold.
- Only files placed in Koofr Vault are client-side encrypted, and the Vault cannot be opened in the desktop app.
- The free plan cannot connect external clouds or use Office for the web, and its public links expire after 14 days.
- Local folders in the desktop app start at the Suitcase tier, which begins at 250 GB.
Proton Drive
- The free plan is limited to 5 GB.
- Desktop sync apps exist for Windows and macOS only; Linux users get a command-line client and the web app.
- The lowest prices require yearly billing. Drive Plus costs $4.99 a month when billed monthly.
- Individual storage above 200 GB comes only through the Unlimited, Duo and Family bundles, which include other Proton products.
Key features
Koofr
- Connected clouds and one search
- Paid plans connect Dropbox, Google Drive and OneDrive accounts so their files can be browsed and searched next to Koofr storage. The limit runs from 9 to 30 connections, depending on the tier.
- Two-way sync and network drive
- Desktop apps for Windows, macOS and Linux sync chosen folders in both directions and can map Koofr as a network drive. Storage can also be reached over WebDAV and with rclone.
- Koofr Vault
- An open source, client-side encrypted folder with zero-knowledge keys, included on every plan. It is used through a web app and iOS and Android apps, and is compatible with rclone.
- Sharing and receive links
- Files are shared with other Koofr users or through public links, and receive links collect files from anyone. Paid plans lift the 10-link caps and allow permanent links.
- Office for the web
- Paid accounts can create, view and edit Word, Excel and PowerPoint files in the browser, and edit shared documents together with other Koofr users in real time.
- No tracking, EU hosting
- Koofr states that it uses no third-party tracking tools, no ads and no cookies apart from the login cookie. Servers are in ISO 27001 certified data centers in Germany.
Proton Drive
- End-to-end encryption
- Files are encrypted before they are uploaded. Proton states that only the owner and the people they share with can open them, and that Proton itself cannot.
- Sharing controls
- Files, photos, documents and spreadsheets are shared by link, with password protection, expiry dates and the ability to revoke access at any time.
- Proton Docs and Sheets
- Encrypted document and spreadsheet editors with real-time collaboration are built into Drive, and the editor is included on the free plan.
- Photo backup
- The mobile apps back up photos automatically and support collaborative albums for sharing them.
- Desktop sync
- Desktop apps for Windows and macOS sync files between the computer and the cloud. A command-line client is offered for Linux, macOS and Windows.
- Long version history
- Paid plans from Drive Plus allow previous versions of a file to be recovered for up to 10 years.
Plans
Koofr
Free€0
10 GB with two-way sync, mobile media backup, file versioning and 1 Vault Safe Box. Up to 10 public links, each limited to 14 days.
Briefcase€0.50 to €2
per month, billed yearly, incl. 22% VAT
S 10 GB (€0.50), M 25 GB (€1) or L 100 GB (€2), added to the free 10 GB. Unlimited links, 9 external cloud connections and Office for the web.
Suitcase€4 to €10
per month, billed yearly, incl. 22% VAT
XL 250 GB (€4), XL+ 500 GB (€7) or XXL 1 TB (€10). Adds local folders in the desktop app, 18 external cloud connections and 5 Vault Safe Boxes.
Crate€20 to €35
per month, billed yearly, incl. 22% VAT
XXXL 2.5 TB (€20) or 5XXL 5 TB (€35); sizes of 10 TB and up are shown without a price. 30 external cloud connections and 10 Vault Safe Boxes.
Proton Drive
Proton Free$0
5 GB of storage for files, photos and documents, with the online document and spreadsheet editor.
Drive Plus$3.99
per month, billed yearly at $47.88 ($4.99 billed monthly)
200 GB of storage and 10 years to recover previous file versions.
Proton Unlimited$9.99
per month, billed yearly at $119.88 ($12.99 billed monthly)
500 GB of storage plus Proton VPN, Proton Mail, Proton Calendar and Proton Pass.
Proton Duo$14.99
per month, billed yearly at $179.88 ($19.99 billed monthly)
2 TB of storage for up to 2 users, with everything in Unlimited and advanced account protection.
Proton Family$23.99
per month, billed yearly ($29.99 billed monthly)
3 TB of storage for up to 6 users, with the Proton premium products that are included in Duo.
Drive Professional$7.99
per user / month, billed yearly ($9.99 billed monthly)
Team plan with 1 TB per user, user access management, and sync across devices and users.
Ways to pay less
Koofr
- Other savings
Loyalty Discount of 5% to 50%
Paying yearly subscribers earn 5% after 1 year, 10% after 2, 20% after 3, 30% after 4 and 50% after 5. It applies automatically to plans from L (100 GB) up and cannot be combined with other promotions.
Proton Drive
- Annual discount
20% to 25% off with yearly billing
Billed yearly, Drive Plus is $3.99 a month instead of $4.99 (20% off), Proton Unlimited is $9.99 instead of $12.99 (23% off) and Proton Duo is $14.99 instead of $19.99 (25% off).
