Comparison

Authenticator App vs Authenticator 2FA by KeepSolid

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Authenticator App

Secure your online accounts with this app that manages all your two-factor authentication (2FA) codes in one place. It offers seamless syncing across devices, organized folders, and encrypted backups for peace of mind. Personalize your experience with custom icons and themes for easy account recognition.

Highlights
  • Manage all 2FA codes in one app
  • Seamless sync across Apple devices
  • Encrypted backups for code protection
  • Organize accounts with folders
  • Custom icons and themes
  • iOS & macOS widgets for quick access
Features
Read full description

Take control of your digital security with Sentinel Authenticator, the trusted way to manage and protect your two-factor authentication (2FA) codes. Fully compatible with Google Authenticator, Authy, and all other authenticators – making it effortless to switch or use alongside your existing apps. /// Why Sentinel Authenticator? • All Your Codes, One App – Store and manage every 2FA code in a single, secure place. • Seamless Sync – Keep your codes up to date across all Apple devices with iCloud Keychain (encrypted by Apple) or Sentinel Cloud with end-to-end encryption. • Organized & Accessible – Create folders for work and personal accounts to find what you need faster. • Never Lose Access – Encrypted backups protect your codes so you always stay in control. /// Personalization & Ease of Use • 900+ Custom Icons for instant account recognition • 8+ Themes & Layouts including Modern, Classic, Focus, and more • iOS & macOS Widgets for quick access to your 2FA codes /// Always Here for You Need help? Contact us at hello@getsentinel.io – we usually respond within an hour. Protect your accounts today. Download Sentinel Authenticator now and secure apps like Instagram, Google, Binance, Kraken, Robinhood, Discord, and Twitch. For further details, review our policies: Terms of Service: https://getsentinel.io/terms-of-service Privacy Policy: https://getsentinel.io/privacy-policy

About

Authenticator 2FA by KeepSolid

This app generates time-based one-time passwords to add an extra layer of security for your online accounts. It supports multi-factor authentication for services like Facebook, Google, and Amazon, protecting your data from unauthorized access. The app offers multi-device support and a user-friendly interface.

Highlights
  • Two-factor authentication (TFA/2FA)
  • Time-based one-time passwords (TOTP)
  • Multi-device support
  • Secure code generation
  • User-friendly interface
  • Account aggregation
Features
Read full description

Authenticator by KeepSolid is a utility app used with Facebook, Google, Amazon, and other apps to create an extra layer of two-factor (TFA or 2FA) protection when accessing your accounts. With this code generator, you can add a second validation challenge in addition to logins and passwords and protect your data from any unauthorized access. Multi-factor authentication with time-based one-time passwords (TOTP) guarantees access to your account for only verified parties whatever service you use, Facebook, Google, GitHub, Sony PlayStation, or Steam. This mobile app generates time-based one-time passwords that are more secure than event-based ones and widely used in creating security keys for multi-factor or two-factor authentication. WHAT IS TWO-FACTOR AUTHENTICATION (TFA) Two-factor authentication is a security method that requires two separate forms of identification to access your account: something you know (your password) and something you have (a special code from the TFA app on your trusted device). For instance, even if hackers get your password they will not be able to get access to your Binance or Amazon account as they will not have the secret code from Authenticator Mobile App. HOW THE AUTHENTICATOR APP WORKS When you activate the TFA in any service, you can add KeepSolid Authenticator as a second authentication factor. For example, after you add your Instagram or Facebook account to the Authenticator app, it will generate a time-based one-time password that you can use to confirm that it's you logging in to a website or service. BENEFITS OF MULTI-FACTOR AUTHENTICATION AND AUTHENTICATOR APP We use a myriad of online services every day: Instagram, Facebook, Amazon, Binance, etc. and each of them contains sensitive information that we need to protect. If you don’t want to become a victim of identity theft or data leakage, you need a verified authenticator app. Multi-device support. If you decide to use another device for two-factor authentication you don’t need to transfer each separate account manually. You will be able to create an archive file which you can save wherever you want and import your items on a new device. Secure 2FA protection. Using the verified KeepSolid Authenticator app to generate time-based one-time passwords is more secure than text messaging or email. The primary reason is that it's more difficult for a third party to gain physical access to your device and generate a code without you knowing about it. User-friendly navigation and interface. The Authenticator app by KeepSolid was designed with all users in mind. With our app, you don’t need special technical knowledge to activate the two-factor authentication (TFA) or use the time-based one-time passwords on any service you use. All the code generator interface elements are intuitive. All accounts in one place. With our TOTP code generator, you can link many accounts with TFA enabled and you will don’t need to register new emails to use Multi-factor authentication or TFA on new accounts. All your time-based one-time passwords will be kept in one place. The KeepSolid Authenticator app will provide you with an extra layer of security for your Microsoft Windows, Apple, Sony, or any other accounts. With multi-factor authentication and time-based one-time passwords, you don’t need to rely on a single password. With the rising number of identity thefts and cyber attacks in 2022, you have every reason to look for better ways to stay safe on the web. And The KeepSolid Authenticator App is the solution.

Screenshots

Authenticator App4 screens
Authenticator 2FA by KeepSolid4 screens

Verdict

The call

The clearest difference is rating: Authenticator App at 4.8 against Authenticator 2FA by KeepSolid's 3.9. Authenticator App also leads on update cadence (every 10 days vs monthly). Authenticator 2FA by KeepSolid's advantage is in-app purchases (none vs 4) and iOS requirement (14.0 vs 16.0). On price, review sentiment, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Authenticator App sells 3 in-app purchases, starting at $1.99 per month. Authenticator 2FA by KeepSolid asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Authenticator App holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 32 and 11 respectively. Written reviews complicate that: 72% of Authenticator App's written reviews are positive against 75% of Authenticator 2FA by KeepSolid's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Authenticator App ships an update every 10 days, Authenticator 2FA by KeepSolid monthly. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

Scorecard5 real differences · 5 level
Authenticator App versus Authenticator 2FA by KeepSolid: the parameters behind the verdict, then further details
ParameterAuthenticator AppAuthenticator 2FA by KeepSolid
PriceFreeFree
Rating4.8 (32 ratings) — better3.9 (11 ratings)
Positive reviews72.4% of reviews75.0% of reviews — better
Number of ratings32 — better11
Update frequencyEvery 10 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, Mac, Apple WatchiPhone, iPad, iPod, Apple Watch
Requires iOS16.014.0 — better
Further details — not scored
Size50 MB45 MB
Age rating4+4+
DeveloperTommaso CarpiKeepSolid Inc.

Customer experience

Authenticator App

All ratings32 ratings
Positive96.9%
Neutral0.0%
Negative3.1%
Written reviews105 reviews
Positive72.4%
Neutral4.8%
Negative22.9%

Authenticator 2FA by KeepSolid

All ratings11 ratings
Positive72.7%
Neutral0.0%
Negative27.3%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Bugs and requests

Authenticator App

Reported bugs

12 issues
  • Widgets not working on Mac Desktop and iPhone
  • App stuck on loading tokens
  • Syncing issues between devices
  • Codes not working for specific services (Discord, Amazon)
  • Unexpected charges/multiple purchases
Show 7 more
  • Loading screen issues on iPhone 12 Pro Max (resolved)
  • Paid features (dark mode) removed/changed
  • Cannot delete items
  • Cannot rename accounts
  • Cannot edit accounts
  • Cannot reorder accounts
  • Inconsistent widget behavior

Requested features

17 requests
  • Ability to reorder/hide folders
  • Sort accounts by email address or service
  • Show duplicates
  • Show date service added
  • Backup options (more explicit)
Show 12 more
  • Start on login option
  • Ability to delete items
  • Ability to rename accounts
  • Ability to edit accounts
  • Ability to reorder accounts
  • Watch companion app
  • More customization options
  • Add password keeper in details page
  • Improve widget functionality
  • Add Chinese language support
  • Increase account limit beyond two for free tier
  • Easier export of all keys

Authenticator 2FA by KeepSolid

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Authenticator App

Subscriptions2
  • Monthly Subscription$1.991 Month
  • Annual Subscription7 Days trial$9.991 Year
One-time1
  • Lifetime Access2 variants$39.99
None

Authenticator 2FA by KeepSolid

No in-app purchases

Questions

Is Authenticator App free?
Authenticator App is free to download, with in-app purchases available.
Is Authenticator 2FA by KeepSolid free?
Authenticator 2FA by KeepSolid is free to download, with no in-app purchases.
Which has better reviews, Authenticator App or Authenticator 2FA by KeepSolid?
Authenticator App is rated higher. Authenticator App averages 4.8 out of 5 from 32 ratings, while Authenticator 2FA by KeepSolid averages 3.9 from 11 ratings.
Do Authenticator App or Authenticator 2FA by KeepSolid have ads?
Neither Authenticator App nor Authenticator 2FA by KeepSolid shows ads.
Which is updated more often, Authenticator App or Authenticator 2FA by KeepSolid?
Authenticator App ships an update every 10 days, and Authenticator 2FA by KeepSolid monthly. Most recently, Authenticator App was updated on October 3, 2026 and Authenticator 2FA by KeepSolid on September 29, 2026.

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