OnlyKey review (2026): is it worth $65.99?
USB hardware password manager and two-factor security key
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OnlyKey report card
Fair · out of 4.0 · graded Nov 13, 2026
Best for a USB key that holds passwords and works as 2FA
OnlyKey is a USB device with a PIN pad that stores passwords and doubles as a two-factor key, for $65.99 one-time. It has no sync, no phone app and no browser extension, and losing it without a second key leaves a gap.
Who OnlyKey is for
- Fits if you want a hardware key and password storage in one device
- Works for people who want no software and a one-time purchase
Who OnlyKey is not for
- Skip it if you lose things: without a backup key your passwords are gone, hence the two-pack
- Not for you if you want sync or a phone app, as none is listed
- Watch out: shipping is extra, and prices show in local currency
- Tight if you want browser autofill, as no extension is listed
Why OnlyKey gets a 2.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- BValue for money$65.99 one-time equals the category's middle one-time price, under two years of a $2.99 subscription.
- FFree plan and trialA physical device with no free plan and no trial.
- CFeaturesPassword storage, 2FA, SSH and encryption. No sync, no phone app and no browser extension.
- BEase of useIt works without installing software, which keeps setup short. No store rating on record.
- CPlatforms and integrationsWindows, Mac, Linux and Chromebook, computers only. No phone app or extension on the pages read.
What these grades rest on. Graded from this listing, whose facts were read from OnlyKey's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/onlykey#review"><img src="https://toolgpa.com/badge/onlykey.svg" alt="OnlyKey: 2.0 GPA on ToolGPA" width="196" height="56"></a>Where OnlyKey stands among password managers
OnlyKey's GPA of 2.0 is higher than 2 of the 49 other password managers we grade, and level with 6.
It stands best on ease of use (B, above 31 of 49) and worst on free plan and trial (F, above 0).
Each grade against the category
Every bar is all 50 password managers we grade, cut by the letter each got. OnlyKey’s own letter is outlined.
- BValue for moneyAbove 24 of 49, level with 13
- FFree plan and trialAbove 0 of 49, level with 3
- CFeaturesAbove 0 of 49, level with 31
- BEase of useAbove 31 of 49, level with 9
- CPlatforms and integrationsAbove 0 of 49, level with 15
Keep OnlyKey, or make your own?
Keep it
To replace OnlyKey you would be making a password vault, the last thing anyone should make for themselves. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 41 of the 49 other password managers grade higher. It costs $65.99, paid once. OnlyKey is open source, so there is a third way: take its code and run it yourself.
What you could not
- A password vault, the last thing anyone should make for themselves.
- Apps for macOS, Windows and Linux that stay in step with each other.
What this rests on. OnlyKey’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is OnlyKey?
OnlyKey is a USB hardware device that combines a password manager, a two-factor security key and a file encryption token. You unlock it with a PIN typed on the device itself, and it types usernames and passwords into the computer it is plugged into. The vendor describes it as open source.
Worth knowing
- It is a physical device: losing it without a backup means relying on a second key, which is why a two-pack is sold.
- Store prices are shown in the visitor's local currency; the dollar figures were read from the US version of the pages.
- No sync service, mobile app or browser extension is listed on the product pages.
- Shipping is extra and calculated at checkout; the vendor also points US buyers to Amazon.
Key features
- Hardware password manager
- Plugged into a computer, it types the username and password at the press of a button, so credentials need no browser extension or app.
- PIN entered on the device
- The unlock PIN is typed on the key itself, and the vendor says all data is securely erased after 10 failed attempts.
- Two-factor authentication
- Supports FIDO2 and U2F, Yubico OTP, TOTP and challenge-response methods.
- Encryption and SSH
- Acts as a file and message encryption token; the DUO model is listed for SSH and OpenPGP use as well.
- Rugged build
- The vendor lists a waterproof, tamper-resistant case rated IP68 and MIL-STD-810G.
- Works on several operating systems
- The vendor lists Windows, macOS, Linux and Chromebook support.
OnlyKey pricing
As of Nov 13, 2026, OnlyKey is a paid product, starting at $65.99 one-time (single device).
- Starts at
- $65.99 one-time (single device)
- Free plan
- None
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| OnlyKey | $65.99one-time | One device. Shown on the product page at $65.99 against a crossed-out $69.99, with no end date given. |
| OnlyKey DUO | $65.99one-time | One device with both USB-A and USB-C connectors; also supports SSH and OpenPGP. |
| Two OnlyKey bundle | $99.99one-time | Two devices, sold so that you have a backup. |
Read from onlykey.io on Nov 13, 2026. Prices change, so confirm with OnlyKey before you buy.
Works with
- Windows
- macOS
- Linux
- Chromebook
OnlyKey alternatives
- OnlyKey vs Mooltipass
From $160.00 one-time
- OnlyKey vs Bitwarden
Free plan · from $1.65/mo
- OnlyKey vs Passbolt
Free plan · from $4.90/mo
- OnlyKey vs 1Password
Free trial · from $3.99/mo
Common questions
Does OnlyKey have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. OnlyKey is listed for macOS, Windows and Linux.
Does OnlyKey have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. OnlyKey is listed for macOS, Windows and Linux.
Is OnlyKey open source?
Yes. OnlyKey is open source, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.