Most cloud storage comparisons resolve into an argument about jurisdiction: where the company is based, which laws apply, whose intelligence services can compel what. That argument is genuinely useful when you are weighing a European provider against an American one.
It is useless here. Infomaniak and Proton are both headquartered in Geneva. Both fall under Swiss law. Whatever you think about Switzerland as a place to store data, you think it about both of them equally. So the comparison has to be made on something else - and that something else turns out to be a single decision that explains almost every other difference between them.
Short answer
Proton Drive encrypts your files so that Proton cannot read them. kDrive keeps the keys, so Infomaniak can. Everything else follows from that. Proton Drive is the right choice for material you want no provider able to open. kDrive is the right choice if you want collaborative editing, search inside your documents and more storage for your money, and you are comfortable with a Swiss provider being technically capable of processing your files.
Neither of these is the wrong answer. They are answers to different questions.
The one difference that generates the others
Proton Drive is built on end-to-end encryption. Files are encrypted on your device before they leave it, and Proton does not hold the means to decrypt them. The company's inability to read your data is the product.
kDrive encrypts data in transit and at rest, with Infomaniak managing the keys. Your files are protected from interception and from someone walking off with a disk, but the service itself is technically able to process them. Infomaniak does not market kDrive as zero-knowledge, and that is a design decision rather than a gap.
Read that as a trade rather than a ranking, because it cuts both ways.
What Proton Drive gives up by not being able to read your files: real-time collaborative editing is hard to offer when the server cannot see the document. Server-side search inside file contents is hard when the contents are opaque. Previews, thumbnails and format conversion all normally happen on a server that can open the file.
What kDrive gives up by holding the keys: the guarantee. A provider that can technically read your files is a provider that can be compelled to, or breached in a way that exposes them. Swiss law and Infomaniak's own policies constrain what happens in practice - but a policy is a promise, and end-to-end encryption is an architecture. That distinction is the entire reason zero-knowledge services exist.
Where the Swiss argument still matters - and where it does not
Switzerland is not in the European Union and is not part of the Five, Nine or Fourteen Eyes arrangements. Swiss data protection law is generally regarded as strong, and neither company is subject to the US legal instruments that let American authorities reach data held by American providers abroad.
All of that is a real advantage - and both of them have it. If you arrived here because you want to leave a US provider, either one moves you. Choosing between them on "which is more Swiss" is a question with no answer.
One genuine nuance: Infomaniak owns and operates its own data centres in Switzerland, so the physical infrastructure and the company are the same entity. That is worth something to people who care about the whole chain rather than the legal address alone. It does not, however, change what the provider can technically read.
Beyond encryption: what you actually get
Collaboration. kDrive includes collaborative document editing, so several people can work on the same file at once. If your use case is a small team working on shared documents, this is a substantial practical difference and it is on kDrive's side.
The surrounding suite. Both are parts of larger ecosystems rather than standalone storage. Infomaniak's includes mail, calendar, video meetings and productivity tools, oriented towards running a small organisation. Proton's includes Mail, VPN, Calendar and Pass, oriented towards personal privacy across the board. Which suite you want is often a better guide than the storage feature list. If you are already weighing Proton against other encrypted providers, our comparison of Proton Drive, Tresorit and pCloud covers that ground.
Price per terabyte. kDrive is generally the cheaper of the two for a given amount of space, and offers plans covering several users. Proton Drive costs more for equivalent storage. This is the ordinary economics of end-to-end encryption and of scale, not a sign that one is overpriced. Check current pricing directly - any article citing exact figures is citing a snapshot that ages badly.
Recovery. This is where the encryption model becomes concrete. A zero-knowledge provider genuinely cannot recover your data if you lose your credentials and your recovery method, because that is what zero-knowledge means. A provider holding the keys can be more forgiving. Whichever you choose, set up the recovery method on day one.
How to choose
Choose Proton Drive if you are storing material you want no provider technically able to open - identity documents, financial and medical records, contracts, source material you are responsible for - or if you already use Proton's other services and want one account for all of them.
Choose kDrive if your daily use is collaborative work rather than archival, you want more storage for the money, or you want a Swiss-hosted suite for a small organisation and you accept that the provider can process your files.
Use both if your needs are genuinely mixed, which is common. The discipline that makes this work is deciding in advance which category a file belongs to, rather than letting habit choose for you.
The bottom line
The honest comparison here is not "which Swiss cloud is more private". It is whether you want a provider that cannot read your files, or one that can and therefore offers you more. Proton Drive sells the guarantee. kDrive sells the capability and the price.
If you are unsure, ask yourself a single question about the files you would actually store: would it matter to you if a court order, a rogue employee or a breach put them in front of a human being? If yes, the guarantee is what you are buying. If not, you are paying for something you do not need, and kDrive gives you more for less. To go deeper on what the terms mean, see our explainer on end-to-end versus zero-knowledge encryption.
Frequently asked questions
- Are kDrive and Proton Drive both Swiss?
- Yes, and this is why jurisdiction is the wrong criterion for choosing between them. Infomaniak is based in Geneva and operates its own data centres in Switzerland. Proton is also based in Geneva. Both therefore fall under Swiss law, which sits outside the European Union and outside the Five, Nine and Fourteen Eyes intelligence-sharing arrangements. If you were comparing either of them with a US provider, jurisdiction would be a decisive argument - between these two it cancels out.
- Is kDrive end-to-end encrypted?
- Not in the zero-knowledge sense that Proton Drive is. kDrive encrypts data in transit and at rest, but Infomaniak manages the keys, which means the service is technically able to process your files. Proton Drive is built so that file contents are encrypted on your device and Proton cannot read them. This is the single most important difference between the two, and it is a design choice on both sides rather than an oversight on one.
- So why would anyone choose the one that can read the files?
- Because being able to read the files is what makes several everyday features possible. Real-time collaborative editing of documents, server-side full-text search inside your files, thumbnail previews and format conversion all require the service to process content it can actually see. A zero-knowledge design has to give up or heavily rework those features. If your daily use is collaborative work rather than archival, that trade-off may not be worth it to you.
- Which is better value for large amounts of storage?
- kDrive is generally the cheaper option per terabyte, and it includes plans that cover several users. Proton Drive costs more for equivalent space, which is the normal price of end-to-end encryption and of a smaller company operating at a smaller scale. Check both providers' current pricing pages before deciding - these figures move, and any article quoting exact numbers is quoting a snapshot.
- Can I use both?
- Yes, and for many people it is the sensible answer. Keep the genuinely sensitive material - identity documents, financial records, contracts, anything you would not want a provider able to open - in Proton Drive, and use kDrive as your working and collaboration space. The important thing is deciding deliberately which files go where, rather than defaulting everything into whichever one you opened first.
- What happens to my files if I forget my password?
- The answers differ, and the difference follows directly from the encryption model. With a zero-knowledge service like Proton Drive, losing your credentials and your recovery method can mean the data is unrecoverable, because the provider genuinely cannot decrypt it for you - which is the point. With a service that holds the keys, account recovery is more forgiving. Whichever you pick, set up and safely store the recovery method the provider offers on the day you create the account, not later.
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