The short answer: pCloud's default storage is encrypted on pCloud's servers with keys pCloud holds, and end-to-end encryption applies only to files in the paid Crypto folder. A pCloud alternative that encrypts every file on your device by default, on every plan, removes that choice. ShieldFive does this, including on its free 5 GB plan, and sells a pay-once Lifetime Vault (2 TB for €199) for people who chose pCloud for lifetime pricing. pCloud remains ahead on maturity, apps and certifications.
What pCloud does well
pCloud is a polished, popular product, and it does several things genuinely well. Founded in 2013, it offers fast native apps, block-level sync, and media-friendly features, and it is unusual in offering lifetime plans — pay once and keep the storage, rather than renewing a subscription. That is a real and distinctive proposition, and for a lot of people it is the reason they choose pCloud in the first place.
It also takes encryption seriously where it counts. pCloud's paid Crypto add-on provides client-side, zero-knowledge encryption: files placed in the Crypto folder are encrypted on your device before upload, and pCloud states it cannot access them. pCloud also ran a public Crypto Hacking Challenge around 2014, offering up to $100,000 to anyone who could break that client-side encryption, and reports that it went unbroken. The company, pCloud International AG in Baar, Switzerland, holds ISO 27001 certification (the 2013 edition) and ISO 9001 for quality management; the SOC 2 Type II it cites belongs to its data-centre providers, not to pCloud itself.
So this is not a weak product. The honest comparison below turns on one specific design choice: what is protected by default.
Why people look for an alternative
The reason people look for a pCloud alternative is usually the same one, and it is specific:
- Zero-knowledge by default, not as a paid add-on. By default, files on pCloud are protected by server-side AES-256 encryption with pCloud holding the keys. That is encryption, but it is not zero-knowledge: pCloud can technically access those files. End-to-end, zero-knowledge encryption is the paid Crypto add-on, applied only to the Crypto folder, and free users do not get it at all. People who assumed "encrypted" meant "the provider can't read it" come looking once they learn the default does not work that way.
- Post-quantum protection. pCloud's materials do not describe any post-quantum encryption.
- An open, checkable crypto core. pCloud's clients are not open source, so there is no public way to independently verify how the encryption behaves.
None of these are knocks on pCloud's Crypto feature, which is a legitimate piece of engineering. They are about what happens to the files you do not specifically put in the Crypto folder.
ShieldFive: what it does, and its limits
ShieldFive encrypts every file, and its name, on your device before upload, on every plan including the free one. We store only ciphertext and never hold your keys. Sign-in sends a key derived from your password in the browser, not the password itself.
Web uploads default to post-quantum hybrid encryption (ML-KEM-1024 with XChaCha20-Poly1305), with AES-256-GCM as a fallback. The Android app, in Google Play testing and not yet a public release, uses the same format. There is no iOS app or desktop sync client yet. For firms, a document request lets a client upload files to you through one link, without creating an account.
The limits: we serve the web app's code, so the guarantee holds for the code you are served; file sizes and timestamps are not encrypted; the crypto core is open source (Apache-2.0) but the apps are not; and no external security audit has been completed. Review the security model and current plans before choosing.
ShieldFive vs pCloud at a glance
| Capability | ShieldFive | pCloud |
|---|---|---|
| Zero-knowledge encryption | Every file and filename, on every plan | Paid add-on (pCloud Crypto), not on by default |
| Post-quantum on stored files | Hybrid default on web and Android, AES-GCM fallback | No |
| EU data residency | Yes | Region choice: EU (Luxembourg) or US (Dallas) |
| File-content cipher | Web and Android: hybrid/AES-GCM | AES-256 |
Comparison reflects each vendor's public documentation as of 22 September 2026 and is updated as products change.
Where pCloud is ahead, honestly
A fair comparison has to run both ways, so here is where pCloud is the stronger choice today.
Lifetime plans. pCloud's lifetime plans are genuinely distinctive: a one-time payment for storage you keep, with no recurring subscription, from a company that has been shipping since 2013. ShieldFive has one comparable option — a Lifetime Vault at €199 once for 2 TB — but that is the only pay-once tier it sells, and it comes from a much younger product with no external audit behind it. If a pay-once plan with a decade of track record is what you want, pCloud is the safer bet. For every provider that still sells pay-once storage side by side, see lifetime cloud storage compared.
Certifications and a public challenge record. pCloud holds ISO 27001 (2013 edition) and ISO 9001 certifications, and its Crypto encryption stood up to a public $100,000 hacking challenge run around 2014 — old evidence, but a public record. ShieldFive's crypto core is open and readable, but it has not yet completed an external audit — that audit is planned, not done. If formal certifications or that public track record are what you need today, pCloud is ahead, and it would be wrong to imply otherwise.
Maturity and features. pCloud has shipped since 2013, with mature native apps, block-level sync, and media features that a newer, more focused product may not match. If those conveniences matter more to you than zero-knowledge-by-default, pCloud is a reasonable pick.
If you want a mature, certified product with lifetime pricing and you are comfortable using the Crypto add-on for the files that need end-to-end encryption, pCloud is a strong option.
Which one fits you
pCloud fits you if you want pay-once pricing from an established vendor, mature apps and convenience features, and you are happy to put the files that truly need zero-knowledge protection into the paid Crypto folder while the rest sit under server-side encryption.
ShieldFive fits you if you want every file encrypted on your device by default without picking a special folder, need clients to upload to you without an account, and can accept a younger product with no external audit yet and no iOS or desktop sync app. Test it with files you can afford to lose first.
Try it
The free plan is 5 GB with no card. Upload a few test files, share one with an expiry, revoke it, and check recovery before moving anything that matters.
This comparison reflects each vendor's public documentation as of 22 September 2026 and will be updated as the products change.