AltCatalog
Catalog Authenticator apps Google Authenticator

Alternatives to Google Authenticator

The barebones TOTP standard

Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

#7 of 10 in Authenticator apps

Google Authenticator ranks #7 of 10 in Authenticator apps, with an Alt Score of 55. It is proprietary, free and available on iOS and Android. 8 of 9 checklist rows are verified against a public source.

Most compared with 2FASStratumEnte Auth
Official site Suggest an edit Data history Work on Google Authenticator? Claim this page
Who it's for

Anyone who wants a free, no-frills app to generate two-factor authentication codes for their online accounts, on either iOS or Android.

What you get

Generates time-based one-time passcodes (TOTP) for any service that supports standard 2FA. Accounts can optionally sync to a Google Account so codes are recoverable across devices. It's free, ad-free, and works without an internet connection once accounts are set up.

How it works

Add an account by scanning a QR code or entering a setup key shown by the service you're securing, then use the rotating 6-digit code the app displays as the second factor when signing in.

Where Google Authenticator stands out

Verified capabilities most alternatives don't have.

Multi-device sync only 4 of 10 apps

See the full checklist

Why people leave Google Authenticator

Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.

Sign in to add a reason — new reasons go through moderation before appearing.

Ranked alternatives

Ordered by Alt Score. Click any score to see the breakdown.

Sponsored Paid slot. Never affects the ranked order below. Promote here →
01

Open source 2FA with browser extension approvals.

GPL-3.0 iOSAndroidBrowser extension
Alt Score

Alt Score · 85

How this alternative ranks. How it works →

Verified coverage 90%83
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

02

Open source authenticator with wearable support.

GPL-3.0 Android
Alt Score

Alt Score · 75

How this alternative ranks. How it works →

Verified coverage 90%72
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

03

E2E encrypted cross-platform authenticator.

AGPL-3.0 iOSAndroidWindowsmacOS +2
Alt Score

Alt Score · 70

How this alternative ranks. How it works →

Verified coverage 90%67
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

04

Open source Android TOTP with encrypted backups.

GPL-3.0 Android
Alt Score

Alt Score · 60

How this alternative ranks. How it works →

Verified coverage 90%56
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

05

Twilio's synced 2FA app.

Proprietary iOSAndroid
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

06

Enterprise push MFA from Cisco.

Proprietary iOSAndroid
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

07
F

Red Hat's minimal open source OTP.

Apache-2.0 iOSAndroid
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

08

Push approvals for Microsoft accounts.

Proprietary iOSAndroid
Alt Score

Alt Score · 45

How this alternative ranks. How it works →

Verified coverage 90%39
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

09

TOTP stored on your YubiKey.

Apache-2.0 iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 40

How this alternative ranks. How it works →

Verified coverage 90%33
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

Feature comparison

How Google Authenticator compares with its alternatives, feature by feature.

Comparing Google Authenticator 2FAS × Stratum × Ente Auth × Aegis Authenticator × Authy ×
+ Add app
Duo Mobile FreeOTP Microsoft Authenticator Yubico Authenticator
Authenticator apps checklist Google Authenticator2FASStratumEnte AuthAegis AuthenticatorAuthy
Pricing model
Starts at
License
Platforms
TOTP
Encrypted backup
Multi-device sync
Browser extension
Apple Watch / Wear OS
Import from other apps
Export allowed
Open source
Push-based approvals
verified pending unknown (?) Click any cell to view its source or propose a value
Sources & verification 12

Every fact and feature listed for Google Authenticator is verified against its own pages. Each alternative is sourced on its own page.

FAQ

Yes. 2FAS, Stratum and Ente Auth have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.

2FAS, Stratum and Ente Auth — every license claim links its source.