Security & privacy tools / Two-factor authentication8 tools
Best authenticator apps
Generate one-time codes to protect your accounts. Facts come from each tool's own pages, and every score says where it comes from. How we rank
- Tools
- 8
- Researched
- 4
- Free option
- 4
- Only listed
- 4
Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.
Ranked by signals we can measure or quote: website health, the facts each tool's own pages state, and community discussion. Nothing here has been hands-on tested yet, so this is not a quality test. How the signals rank works
Want two of these head to head? Compare tools side by side.
Details and sources
- Free tier
- Duo offers a free tier for teams of 10 or less. The page says: “Duo Free for teams of 10 or less.”
- Paid plan
- Not stated.
- Signup
- A free sign up is available. The page says: “Free sign up.”
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-08. Sources: Home. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Details and sources
- Free tier
- 2FAS Pass has a free plan at $0 with no credit card required. Limits: up to 200 items, an extension inactivity timeout of under 60 minutes, and 1 browser extension.
- Paid plan
- The Unlimited plan for 2FAS Pass is $9.99 per year, paid in the app. It removes the item cap, the inactivity timeout and the extension limit. A business plan is listed as coming soon.
- Signup
- Not stated.
- Watermark
- Not applicable.
- Where files go
- The website privacy policy says the website does not collect, store or process personal information from visitors. It does not say where app data is stored or for how long.
From the tool's own pages, checked 2026-11-01. Sources: 2FAS Pass pricing, Website privacy policy. Prices and limits change; check the tool before you rely on them.
- 3Free optionSignup unclearFile handling unclearHealth 4.6Community 3.6
Details and sources
- Free tier
- The home page describes it as a free, secure and open source app for Android. No paid tiers or prices are listed.
- Paid plan
- Not stated.
- Signup
- Not stated.
- Watermark
- Not applicable.
- Where files go
- The privacy page says the app does not collect any data from your device and uses the camera only for scanning QR codes. The home page says tokens are kept in a secure vault with optional biometric unlock. Where the vault is stored is not stated.
From the tool's own pages, checked 2026-11-01. Sources: Home page, Privacy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- The Authy app is free to use. The page says: “Defeat cyber criminals & avoid account takeovers with stronger security, for free!.”
- Paid plan
- Not stated.
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- The app features secure cloud backup. The page says: “Top Rated Authenticator App. Simple to setup, secure cloud backup, multi device support.”
From the tool's own pages, checked 2026-11-04. Sources: Home. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Answers come from each tool's own pages (“Unclear” means they do not say). Tick “Compare” on two to four tools to read them side by side.
Also listed (4, not yet tested)
Each of these answered when we visited its site. We have not tested them or recorded facts, so they are in alphabetical order, not ranked.
- Ente AuthOpen
Protect your accounts with Ente Auth - Free, open source, cross-platform 2FA authenticator, with end-to-end encrypted backups
- FreeOTPOpen
FreeOTP is listed for: two-factor authentication.
- Microsoft AuthenticatorOpen
Protect your personal and business data from outside breaches by securely logging into any account with the Microsoft Authenticator app.
- YubicoOpen
Get the YubiKey, the #1 security key, offering strong two factor authentication from industry leader Yubico.
Other Security & privacy tools rankings
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