Best Free 2FA Apps 2026: 6 Options Compared
Best free 2FA Apps compared: Aegis Authenticator, 2FAS Auth, Ente Auth, Proton Authenticator and 2 more, with free-plan limits, platforms and prices from official pages checked October 23, 2026.
•3 min read•Passwords, Privacy & Identity
Quick comparison
| Tool | Price | Platforms | Best for | Tested |
|---|---|---|---|---|
| Aegis Authenticator | Free (Free, no ads) | Android | Android users who want local control | Docs only |
| 2FAS Auth | Free (Free; page lists donations, no price) | iOS, Android, Browser extension | iPhone and Android users who want easy backup | Docs only |
| Ente Auth | Free (Free with end-to-end encrypted backup and sync) | iOS, Android, Web, macOS, Linux, Windows | Cross-platform use with encrypted sync | Docs only |
| Proton Authenticator | Free (Completely free on all platforms, no ads) | iOS, iPadOS, macOS, Android, Linux, Windows | Anyone who wants one app on every device | Docs only |
| Bitwarden Authenticator | Free (Free, no account needed) | iOS, Android | Bitwarden users who want a separate code app | Docs only |
| Authy | Free (Free app per authy.com) | iOS, Android | People who want synced codes without a vault app | Docs only |
Independent comparison. Paid placements are labelled separately; editorial links earn no affiliate commissions. Learn more.
Good fit if
- You want codes that never leave your phone (Aegis Authenticator is the pick)
- You lose phones often and want painless restore (2FAS Auth is the pick)
- You need codes on a laptop as well as a phone (Ente Auth is the pick)
- You use Windows, Linux and Android together (Proton Authenticator is the pick)
- You already pay for Bitwarden's password manager (Bitwarden Authenticator is the pick)
Not ideal if
- You need paid-tier features, uptime guarantees or support that these free plans leave out
A free 2FA app generates the six-digit codes you type after your password, and nearly every option does that part identically. What differs is what happens when your phone is lost, and that is the one question to settle before you move any accounts. Aegis stores codes only on your Android device and gives you an encrypted export to keep safe, with no account and no cloud. 2FAS and Ente Auth offer optional encrypted backup, so a new phone restores in minutes, and Ente Auth also runs on desktop and web. Proton Authenticator is free across every major platform and keeps codes available offline. Bitwarden Authenticator and Authy sit at the convenient end: Authy syncs across devices, but its desktop apps reached end of life in March 2024. The trade-off is simple. Local-only apps are harder to attack remotely but easier to lose, while synced apps rescue you from a dead phone and put an encrypted copy of your seeds on someone's server. Whichever you choose, move accounts one at a time, keep the recovery codes each site gave you, and test that a code works before you delete the old entry.
Aegis Authenticator
GPL-3.0, Android only, free with no ads. Codes stay on the device with an encrypted vault and export, so you must keep your own backup; there is no cloud sync.
Price: Free (Free, no ads) (Aegis Authenticator pricing, checked 2026-10-23).
Platforms and license: Android. GPL-3.0 (open source).
Project activity: 13.4k GitHub stars · latest release v3.4.3 (Sep 6, 2026) · last commit Sep 6, 2026
Best for: Android users who want local control.
2FAS Auth
Free with local-first storage, optional cloud or manual backup, a browser extension and an Apple Watch app. Parts are open source and terms vary by component, so it is not fully OSS.
Price: Free (Free; page lists donations, no price) (2FAS Auth pricing, checked 2026-10-23).
Platforms and license: iOS, Android, Browser extension. Open source and source-available (terms vary by component).
Best for: iPhone and Android users who want easy backup.
Ente Auth
AGPL-3.0 and free, with end-to-end encrypted sync, offline use without an account, and apps for iOS, Android, desktop and web. Bulk import from other apps helps when switching.
Price: Free (Free with end-to-end encrypted backup and sync) (Ente Auth pricing, checked 2026-10-23).
Platforms and license: iOS, Android, Web, macOS, Linux, Windows. AGPL-3.0 (open source).
Best for: Cross-platform use with encrypted sync.
Proton Authenticator
Completely free on iOS, iPadOS, macOS, Android, Linux and Windows with no ads, and codes work offline. Proton says it is open source but the page names no licence.
Price: Free (Completely free on all platforms, no ads) (Proton Authenticator pricing, checked 2026-10-23).
Platforms and license: iOS, iPadOS, macOS, Android, Linux, Windows. Open source (stated by Proton).
Best for: Anyone who wants one app on every device.
Bitwarden Authenticator
Free with no account needed, codes generated on the device. In the release described on the page, backup goes through the phone's own system only, so pair it with a manual export.
Price: Free (Free, no account needed) (Bitwarden Authenticator pricing, checked 2026-10-23).
Platforms and license: iOS, Android. Open source (licence not named on the page).
Best for: Bitwarden users who want a separate code app.
Authy
Free with multi-device sync, but proprietary and its desktop apps ended in March 2024 per Twilio's changelog. It is easy to move to but harder to leave, so check export before relying on it.
Price: Free (Free app per authy.com) (Authy pricing, checked 2026-10-23).
Platforms and license: iOS, Android. Proprietary.
Best for: People who want synced codes without a vault app.
Compare: Authy alternatives
Which one to pick
- You want codes that never leave your phone: Aegis Authenticator
- You lose phones often and want painless restore: 2FAS Auth
- You need codes on a laptop as well as a phone: Ente Auth
- You use Windows, Linux and Android together: Proton Authenticator
- You already pay for Bitwarden's password manager: Bitwarden Authenticator
Limits of this review
Docs-only for Aegis Authenticator, 2FAS Auth, Ente Auth, Proton Authenticator, Bitwarden Authenticator, Authy: we did not install or run them, so feature claims come from vendor pages. Vendor prices and free limits change; confirm on the linked pricing page before you commit.
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Kevin Fan
Kevin Fan is a SaaS founder. He runs Free Instead Of, which tracks free and open-source alternatives to paid software and checks each price and free-plan limit against the vendor's own pages.
Methodology
Based on official pricing, license and product pages checked 2026-10-23: Aegis Authenticator, 2FAS Auth, Ente Auth, Proton Authenticator, Bitwarden Authenticator, Authy. Prices, free limits and licenses are the figures shown on those pages on those dates. No tool on this page was installed or run. No accounts were created.