Authenticator App-2FA Security

In-app purchases
3.8
276 reviews
100K+
Downloads
Content rating
Everyone
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About this app

Simple two-factor authentication is available for your account and other compatible apps with A1 Authenticator. With A1 Authenticator App, you get all the security without any of the hassle thanks to one-tap verification and safe cloud backup.

Forget passwords—use your phone to log in! Enter your username, then approve the login request on your phone. This two-step verification adds an extra layer of security with your fingerprint, face ID, or PIN. After completing the two-factor authentication (2FA), you’ll gain access to all your account details.

Features:
✅ Produces 6-digit codes every 30 seconds
✅ Notifies users via push notification for one-tap clearance
✅ Provides a free encrypted backup
✅ Assistance with SMS codes
✅ QR code-based automated setup
✅ Dark Mode: Use the app with comfort

Why A1 Authenticator is a multi factor authentication app:

1) Offline Functionality
Disconnected from the internet? It’s not an issue! Our app can generate secure one-time passwords (OTPs) without needing a network connection

2) Secure Backups
You can safeguard your data without worrying thanks to options for offline backup and account restoration.

It’s not too late to protect your data, so what are you waiting for? Start using the A1 Authenticator app today and Protect your online accounts

Start using the A1 Authenticator app today.
Updated on
Dec 29, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.6
266 reviews
Pesky Squash
December 17, 2025
Have to pay to access your codes in an ad infested app. I can't login into other apps because they need the code, but it's trying to force me to buy a subscription just to get the code. Not to mention all of the fake reviews they've got, find a different app
1 person found this review helpful
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Krishna Patel
November 19, 2025
Gives instant codes without delays, super helpful for daily logins ✔️
7 people found this review helpful
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K Kn
November 15, 2025
Authenticator apps significantly improve security by providing two-factor authentication (2FA). By generating time-sensitive, one-time codes, they make it harder for attackers to compromise accounts.✔️
3 people found this review helpful
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What’s new

📝 Release Notes – v1.2.8
New:

👔 Bug Fixes + Improved Tablet UX