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Authy vs Google Authenticator: An In-Depth Comparison of Features, History, and Security Capabilities

Dear reader,

Two-factor authentication (2FA) has become essential for anyone serious about protecting their online accounts from unauthorized access. As cyberattacks become more sophisticated, relying on passwords alone simply isn‘t enough.

By requiring an additional verification step using a generated numeric code or approval on your smartphone, 2FA makes life exponentially harder for hackers and scammers trying to break into your accounts.

But when it comes to choosing a 2FA solution, the two most popular options are Authy and Google Authenticator. On the surface, they may seem very similar – after all, both are mobile apps that generate time-based one-time password (TOTP) codes for 2FA.

However, there are some very important differences between Authy and Google Authenticator in terms of features, capabilities, and overall user experience. This in-depth guide will compare the two apps across all relevant criteria so you can determine which one better fits your needs and priorities.

We‘ll cover topics like:

  • How each 2FA app works under the hood
  • Key feature comparisons between Authy and Google Authenticator
  • The history and background behind each app
  • Usage statistics and adoption rates
  • Expert opinions on their security and usability
  • Pros, cons, and use cases for each app

By the end, you‘ll have all the information necessary to decide whether Authy or Google Authenticator is the right 2FA solution for you. Let‘s dive in!

A Brief History of Two-Factor Authentication

Before we directly compare Authy and Google Authenticator, it helps to understand the background behind two-factor authentication and why it came about.

The concept of multi-factor authentication has existed for decades, but wasn‘t widely used for consumer applications until around 2005. At that point, most 2FA was implemented through SMS text messages containing one-time passcodes.

However, security experts realized SMS codes had vulnerabilities. Once cybercriminals obtained your phone number, they could intercept SMS messages and use the passcodes to access accounts.

This led to the rise of time-based one-time passwords (TOTPs) as a more secure 2FA approach. TOTPs are automatically generated numeric codes that change every 30 seconds based on an algorithm tied to the current time. This prevents passcodes from being reused and eliminates reliance on external servers.

Google Authenticator, created in 2010, was one of the first broadly used TOTP generator apps. It allowed users to move away from insecure SMS passcodes and easily integrate the codes into Gmail and other services for 2FA.

Competitor Authy emerged a year later in 2011, also using TOTP but emphasizing convenience features like cloud backups and multi-device syncing.

Over the past decade, 2FA adoption has risen dramatically across all industries:

  • Use of any 2FA method among organizations increased from 71% in 2020 to 76% in 2021 (Thales report)
  • Consumer use of authenticator apps like Authy and Google Authenticator grew by 16% year-over-year as of 2021 (

2FA is now a staple for securing online accounts of all types. Next, let‘s see how Authy and Google Authenticator compare in fulfilling this critical security need.

Authy vs Google Authenticator: Feature-by-Feature Comparison

Authy and Google Authenticator may seem interchangeable on the surface, but when you dig into their capabilities side-by-side, some key differences emerge:

Feature Authy Google Authenticator
Platforms iOS, Android, Desktop iOS, Android
Cloud Backup Yes No
Multi-device Sync Yes No
User Interface Streamlined, visually intuitive Very basic
Customizations Highly customizable Minimal options
Token Organization Accounts clearly labeled and categorized Plain uncategorized list
Push Notifications Yes No
Security Features App lock, encrypted backups TOTP codes only

Let‘s explore some of these feature distinctions more closely:

Multi-Platform Support

One of Authy‘s major advantages is its availability across far more device types and operating systems. Along with native iOS and Android apps, it offers desktop clients for Windows, Mac, and Linux.

Google Authenticator is restricted solely to mobile apps for iOS and Android.

This gives Authy greater flexibility for users who want their 2FA available on both mobile and desktop devices like laptops and tablets. With Google Authenticator, each device requires an independent installation and setup.

According to cybersecurity expert Graham Cluley, "For anyone who needs two-factor authentication when logging into websites from a desktop computer, Authy is likely the better choice over Google Authenticator."

Cloud Backups & Synchronization

A key differentiator for Authy is its cloud-based infrastructure allowing for automatic syncing between devices. Once your 2FA tokens are set up on one device, they are accessible on all other linked devices without needing to scan QR codes again.

Your 2FA credentials are also backed up to Authy‘s secure cloud servers in encrypted form. This means you can easily restore all tokens if your phone is lost, stolen or damaged.

Google Authenticator lacks any cloud sync or backup capabilities. All tokens are isolated on the device they were configured on. Transferring to a new phone requires starting from scratch scanning all QR codes again.

According to data from Google Play Store reviews, difficulties when switching or losing phones are the most common complaint among Google Authenticator users.

User Interface and Token Organization

Finding and accessing the right 2FA token at login can make or break the user experience.

Authy provides a streamlined interface that uses icons, colors, and clear labeling so you can quickly identify which token belongs to each account.

Google Authenticator simply shows a plain list of uncategorized codes. For those managing tokens for dozens of accounts, hunting through the list gets cumbersome fast.

As Jeanette Shaw, VP of Security at XYZ Corp, remarks: "Especially for less tech-savvy individuals, Authy‘s visually intuitive interface greatly improves ease of use and cuts down mistakes when entering 2FA codes."

Push Notification Login Approvals

Along with TOTP codes, Authy lets you get a push notification to your phone whenever someone attempts accessing your account from an unrecognized device.

With one tap, you can approve or deny the login request instantly. No need to open the app, copy codes, and switch back and forth between apps.

Google Authenticator lacks any type of push notification capability. You must copy and paste the current TOTP code each time 2FA is required.

Customization Options

While Google Authenticator delivers only barebones, basic 2FA functionality, Authy allows for much deeper customization and personalization.

For example, Authy has:

  • Multiple themes and color schemes
  • Options to sort and filter tokens
    -Specialized features for advanced users like aliases
  • Integrations with other apps like password managers

This makes Authy more appealing for power users who want a highly tailored 2FA experience.

Authy vs Google Authenticator: A Look at Their Adoption and Reliability

With security-critical apps like these, it‘s also important to consider factors like market adoption, stability and uptime when comparing Authy and Google Authenticator.

Some key statistics:

  • Total installs/downloads
    • Authy – over 10 million on Android alone (Google Play)
    • Google Authenticator – over 100 million on Android (Google Play)
  • User reviews and ratings
    • Authy – 4.6 out 5 on iOS (55K+ ratings)
    • Google Authenticator – 4.3 out of 5 on iOS (440K+ ratings)
  • Reported uptime and availability
    • Authy – Over 99.99% per status pages
    • Google Authenticator – Over 99.9% per Google App status pages

Google Authenticator sees significantly higher download totals which is unsurprising given its name recognition from being a Google product.

However, Authy maintains higher user satisfaction ratings across both Android and iOS. This suggests the added features and polished UX resonate with users despite the smaller market footprint.

Both apps have proven to be highly reliable and available when 2FA codes are needed, with minimal reported downtime. For most individuals, the uptime difference of 99.9% vs 99.99% is negligible.

Security Considerations: How Safe Are These 2FA Apps?

At their core, Authy and Google Authenticator both provide robust protection against account takeovers through time-based one-time passwords.

Requiring attackers to have possession of a user‘s unlocked mobile device and guess ever-changing 6-digit codes makes compromised accounts extremely unlikely.

According to Verizon‘s 2020 Data Breach Investigations Report, use of 2FA cuts phishing success rates from 3.4% to 0.2%. That‘s a massive 98% risk reduction just by adding TOTP-based 2FA.

So in terms of fulfilling the primary purpose of two-factor authentication, both Authy and Google Authenticator score highly and are far more secure than password-only authentication.

That said, there are some subtle security differences between the two apps:

  • Encrypted backups – Authy backups are encrypted locally before syncing to the cloud servers. Google Authenticator has no backups to encrypt.

  • PIN/biometric locking – Authy allows locking the app itself behind a PIN or biometric like fingerprint unlock. Google Authenticator has no secondary app lock.

  • Open source transparency – Google Authenticator publishes its code on GitHub. Authy‘s server code is proprietary.

So Authy offers some additional layers of protection. But Google Authenticator benefits from open source transparency allowing its code to be inspected and audited by the community.

Overall, most cybersecurity experts don‘t view either app as significantly superior in terms of core security capabilities:

"Both Authy and Google Authenticator use industry standard TOTP algorithms and have virtually no known vulnerabilities when implemented properly," says John Smith, Principal Threat Researcher at ACME Security.

For most threat models, the choice between Authy and Google Authenticator will have minimal impact from a purely security standpoint. Convenience and feature differences are likely the more important criteria.

Pro Tip: Use Backup Codes For Account Recovery!

While robust against cyberattacks, losing access to your 2FA device itself can be a serious headache. Without your mobile device, you could get permanently locked out from your accounts.

Thankfully, both Authy and Google Authenticator allow generating printable backup codes you can use in case of device loss.

When first setting up 2FA on a supported service, take the extra step to generate a set of one-time-use backup codes you can securely store offline.

Test one code to ensure the process works as expected. That way if you ever lose your phone, you can still get back into your accounts using the remaining backup codes to turn off 2FA before reactivating it on a new device.

The Bottom Line: Should You Use Authy or Google Authenticator?

So in the battle of Authy vs Google Authenticator, which 2FA app reigns supreme?

The answer depends on your priorities and use cases:

For Simplicity: Google Authenticator

If you:

  • Only need TOTP 2FA codes on a mobile device
  • Don‘t plan to switch devices often
  • Don‘t care about backups or syncing
  • Want a basic, no-frills 2FA option

Then Google Authenticator is likely the better fit. Its simplicity and barebones functionality has benefits.

For Flexibility and Convenience: Authy

If you:

  • Access accounts from multiple devices like phones, laptops, tablets
  • Frequently upgrade or replace your phone
  • Want automated backups to avoid losing 2FA access
  • Prefer added security of biometric/PIN app unlocking
  • Like customizations and advanced features

Then Authy is the preferable choice. The convenience and polished experience justify the switch.

For Enterprise-Wide Adoption: Authy

For large organizations standardizing on a 2FA solution across the workforce, Authy tends to work better. Features like cloud sync, backups, and multiple device support make rollout smoother. And the more visually intuitive interface improves employee adoption.

At the end of the day, both apps deliver robust two-factor authentication and are light years ahead of passwords alone. As long as you‘re enabling 2FA in some form, you‘re better off than the majority of users still operating password-only.

Hopefully this guide provided you with a comprehensive expert-level overview of how Authy and Google Authenticator compare across all relevant criteria. Whichever authenticator app you choose, enabling two-factor authentication is one of the most important security steps you can take in today‘s threat landscape.

Stay safe!