Comparison · Authenticator apps
Proton Authenticator vs Yubico Authenticator: which is better in 2026?
Proton Authenticator89.0#2 in best authenticator apps
Yubico Authenticator88.0#3 in best authenticator appsProton Authenticator ranks higher in our list of authenticator apps (#2 against #3, score 89.0 against 88.0), but the gap is small and the better choice depends on what you need.
- 89.0Editorial score88.0
- 5Platforms5
- YesFree to useYes
- YesOpen sourceYes
Which should you choose?
Choose Proton Authenticator if you want
Encrypted sync across phones, tablets and desktops.
Open-source app with end-to-end encrypted sync and backup across phones, tablets and desktops, plus an Apple Watch app. No browser extension is listed, and the company is Swiss-based.
Choose Yubico Authenticator if you want
Hardware-key users who want desktop and mobile access.
Open-source companion app for YubiKey keys, with desktop builds for Windows, macOS and Linux and an Android app. It is useful only with a YubiKey, unlike the phone apps above, and its iOS version is a separate app.
The main differences
- Proton Authenticator is free; Yubico Authenticator is free and open source.
Side by side
| Proton Authenticator | Yubico Authenticator | |
|---|---|---|
| Score | 89.0 | 88.0 |
| Rank in list | #2 of 10 | #3 of 10 |
| Price | FreeFree to use and ad-free, according to its site | Free and open sourceFree under Apache 2.0; works with a YubiKey hardware key |
| Free to use | Yes | Yes |
| Open source | Yes | Yes |
| Platforms | iOSAndroidmacOSWindowsLinuxiOS, Android, macOS, Windows, Linux | WindowsmacOSLinuxAndroidiOSWindows, macOS, Linux, Android, iOS |
| Made by | Proton | Yubico |
| Backups and sync | End-to-end encrypted sync and backup | Codes live on the YubiKey; no cloud backup described |
| Best for | Encrypted sync across phones, tablets and desktops | Hardware-key users who want desktop and mobile access |
| Strengths |
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| Limits |
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| Links | Visit site | Visit site |
Questions about Proton Authenticator vs Yubico Authenticator
- Is Proton Authenticator better than Yubico Authenticator?
- Proton Authenticator ranks higher in our list of authenticator apps (#2 against #3, score 89.0 against 88.0), but the gap is small and the better choice depends on what you need. Proton Authenticator is best for: encrypted sync across phones, tablets and desktops. Yubico Authenticator is best for: hardware-key users who want desktop and mobile access.
- Which is cheaper, Proton Authenticator or Yubico Authenticator?
- Proton Authenticator: Free to use and ad-free, according to its site. Yubico Authenticator: Free under Apache 2.0; works with a YubiKey hardware key.
- Do Proton Authenticator and Yubico Authenticator run on the same platforms?
- Proton Authenticator supports iOS, Android, macOS, Windows, Linux. Yubico Authenticator supports Windows, macOS, Linux, Android, iOS.
Choosing between the two
Learning Center
1:17How to decide between two good optionsSettle a close call by sorting it by how hard it is to undo, setting a deadline, scoring the criteria as a tie-breaker and writing down why you chose.
1:20How to compare products fairly: what to keep in mindDefine the job, cap the must-haves, compare like with like, count total cost over one period and weigh the criteria. Includes a worked example.Read more about Proton Authenticator and Yubico Authenticator
All articles- Guides · 5 min readHow to choose an authenticator app: backups, sync and open sourceChoose an authenticator app by how it backs up codes, whether sync is end-to-end encrypted, its license and platform reach. Compare Ente Auth, Aegis and Authy.
- Explainers · 6 min readWhat is a passkey? How it replaces your passwordA passkey replaces a password with a key pair held on your device. Learn how passkeys resist phishing, sync between devices and recover if you lose one.
