Updated September 28, 2026 · ShieldCue Editorial Team
Keeper vs Proton
What sets them apart
| Compare |  Keeper |  Proton |
|---|---|---|
| Platforms | Windows, MacOS, Linux, iOS, Android, Web app, Chrome, Firefox, Safari, Edge, Opera | Windows, MacOS, Linux, Android, iOS, Web app, Command line interface, Chrome, Safari, Firefox, Edge, Brave |
| Family plan | 5 private vaults, 10 GB file storage | Pass Family: up to 6 users, includes 6 Pass Plus accounts and an admin panel |
| Security audit | SOC 2 Type 2 and SOC 3, ISO 27001/27017/27018, FedRAMP High, GovRAMP, FIPS 140-3, quarterly third-party penetration testing | Independently audited by third-party experts (Cure53 audit published July 2023), open source under GPLv3, public bug bounty |
| Encryption | 256-bit AES with elliptic-curve cryptography, zero-knowledge record-level encryption on device, PBKDF2 1,000,000 iterations, TLS 1.3 | End-to-end encryption; 256-bit AES-GCM encrypted vaults; OpenPGP with ECC (Curve25519) for vault keys |
| Features | TOTP | Kill switch |
| Price from | Not confirmed | $4.99 |
| Open source | Not confirmed | Yes |
Same on both: Free plan (Yes), Passkeys (Yes), Zero-knowledge encryption (Yes).
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Key differences
- Keeper scores higher overall: 9.4 vs 9.3.
- Platforms: only Keeper offers Opera.
- Platforms: only Proton offers Command line interface, Brave.
- Support channels: only Keeper offers Phone.
- Features: only Keeper offers TOTP.
- Features: only Proton offers Kill switch.
Our verdict on each
Keeper
Keeper suits readers who want a password manager they can open on a free plan and grow into later, with passkeys, on-device encryption that keeps records unreadable to the provider, and a family plan that covers 5 private vaults, 10 GB file storage.
Proton
Proton bundles a password manager, VPN and encrypted storage in one account, with Pass starting at $4.99 and a free tier. It suits readers who want passwords, private files and a VPN in a single subscription, and who can live with free plan limits that leave out an authenticator, password sharing and file attachments.
Score breakdown
| Area | Keeper | Proton |
|---|---|---|
| Cost | 9.3Higher | 9.2Entry at $4.99 sits under the site median of €6.84, with storage at $95.88 per TB per year and a free plan. |
| Offer | 9.6Higher | 9.5 |
| Privacy | 9.3Higher | 9.1 |
How they place
| Ranking | Keeper | Proton |
|---|---|---|
| Password managers | 12 of 69 | 8 of 69 |
| Privacy tools | 66 of 280 | 10 of 280 |
| Secure cloud storage and backup | 6 of 70 | 2 of 70 |
| Authenticator apps | 9 of 55 | 6 of 55 |
Every fact side by side
| Fact | Keeper | Proton |
|---|---|---|
| Pricing model | Free | Free |
| Legal entity | Keeper Security, Inc. | Proton AG |
| Headquarters | United States | Switzerland |
| Founded | Not confirmed | 2014 |
| Support channels | Email, Chat, Phone, Help centre, CommunityCovers more | Email, Chat, Help centre, Community |
Encrypted storage
| Fact | Keeper | Proton |
|---|---|---|
| Free storage | Not confirmed | 5 |
| Price per TB per year | Not confirmed | $95.88 |
| Jurisdiction | US | CH |
| Compliance certifications | SOC 2 Type 2, SOC 3, ISO 27001, ISO 27017, ISO 27018, FedRAMP High, GovRAMP Authorized, FIPS 140 3 | ISO 27001, SOC 2 Type II |
VPN
| Fact | Keeper | Proton |
|---|---|---|
| Devices | Not confirmed | 10 |
| Server countries | Not confirmed | 140 |
| Features | Not confirmed | No logs, Streaming, Travel |
| Audience | Not confirmed | Business |
| Money-back period | Not confirmed | 30 days |
| Protocols | Not confirmed | WireGuard, OpenVPN |
| Streaming services | Not confirmed | Netflix, Amazon Prime Video, Disney+, Hulu |
| Owner | Not confirmed | Proton Foundation |
| Longest plan (months) | Not confirmed | 24 months |
Secure email
| Fact | Keeper | Proton |
|---|---|---|
| Free plan limits | Not confirmed | Unlimited logins, notes, credit cards and devices; 10 hide-my-email aliases; passkeys and password health alerts; no 2FA authenticator, secure sharing, file attachments or dark web monitoring |
| End-to-end encryption | Not confirmed | All fields end-to-end encrypted: passwords, usernames, web addresses, credit cards, note contents and metadata; 256-bit AES-GCM vaults; only the user can decrypt, Proton cannot |
| Custom domains | Not confirmed | Yes |
Where each stands against the rest
| Fact | Keeper | Proton | Median |
|---|---|---|---|
| Price from | Not confirmed | $4.99below the median | $8 |
Median across 25 listed providers.
Pros and cons
Keeper
Pros
- A free plan is included, and most managers in this comparison offer one too (72.3%).
- Records are encrypted on the device using AES with elliptic-curve cryptography, so a stored vault stays unreadable to the provider, and TLS covers traffic in transit.
- Coverage spans Windows, macOS and Linux, so one vault reaches desktop, mobile, browser extension and web app.
Cons
- The service runs under Keeper Security, Inc. and US terms, which readers in other legal regimes should weigh before storing sensitive logins.
- Phone and chat support are less common than email and help centres in this comparison, at 41.1% and 34.4% of brands, though Keeper's email, chat and phone includes both.
- Shared allowances stop at 5 private vaults, 10 GB file storage, so a household that stores a lot of files needs a bigger tier than the family plan.
Proton
Pros
- A single account covers a password manager, a VPN and end-to-end encrypted storage, with a free plan to start.
- Passkeys, custom domains and a Family plan with an admin panel suit single-user and shared use.
- Vaults use AES-GCM encryption with OpenPGP and ECC keys, and only the account holder can decrypt.
Cons
- Support runs on email, chat and help centre with no phone line.
- Free plan limits leave out the authenticator app, password sharing, attachments and dark web monitoring.
- Extra storage costs $95.88 per TB per year beyond 5 GB free.
Who each suits
Keeper
Who it suits
- Readers who want to try a password manager on a free plan before paying for anything.
- Households that need separate private vaults plus shared file storage, which is what 5 private vaults, 10 GB file storage sets out.
- People who want to reach help through email, chat and phone, including live chat and phone.
Who should look elsewhere
- People who want one ecosystem for everything, since Apple's iOS, iPadOS and macOS covers its own devices and nothing else.
- Teams that need Windows Server coverage, since Windows, Windows Server and macOS lists it and Keeper's Windows, macOS and Linux does not.
- Readers who expect every manager in the comparison to hand out a free plan, since Total Password has none while Keeper does.
Proton
Who it suits
- Readers who want a password manager, a VPN and private files under a single subscription rather than separate products.
- Households and small teams that need shared accounts, since the Family plan bundles several Pass Plus accounts and an admin panel.
- Buyers who care about open source under a copyleft licence, outside security audits and a public bug bounty.
Who should look elsewhere
- Apple Hide My Email at $0.99 if email aliasing is the whole job, since Proton adds a VPN, storage and a password manager.
- Apple Inc. at $0.99 when aliasing is the priority; Proton's $4.99 entry brings a VPN, storage and password manager in the same account.
- EasyOptOuts at $19.99 for a single higher priced subscription, against Proton's $4.99 entry and a free plan.
Current offers
Keeper
Proton
Current offer
Discount code
40% off Pass Plus: 40% off
Shown on the Proton Pass pricing page alongside a 30-day money-back guarantee; applies to the Pass Plus paid plan
Source, checked September 26, 2026
Questions about each
Keeper
Does Keeper have a free plan?+
Yes. Keeper offers a free plan, and so do most managers in this comparison (72.3%). The free tier shows how the vault behaves with your own accounts, while the paid family plan is where 5 private vaults, 10 GB file storage comes in.
What kind of prices do these password managers sit in?+
Across the brands compared here, monthly plans run as low as €0.87 and as high as €63.95, while longer terms sit between €0.73 and €99. A median long-term price of €3.97 shows where a multi-year commitment usually lands.
Proton
How much is Proton Pass at the entry price?+
Proton Pass starts at $4.99, and there is a free plan beside it. The paid tiers widen the set of features, so the entry price only pays off if you want more hide my email aliases, passkeys and password health alerts.
What does the free plan leave out?+
The free plan covers as many logins, notes, cards and devices as you like, but it leaves out the authenticator app, sharing with other people, file attachments and dark web monitoring. Those sit on paid Pass plans, where entry starts at $4.99.
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