Comparison

HC Key vs Authenticator App ©

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

Head to head
About

HC Key

This app allows you to use your smartphone to unlock doors, eliminating the need for physical credentials. Grant temporary access to visitors with customizable timeframes and usage limits.

Highlights
  • Unlock doors with smartphone
  • Replace physical credentials
  • Grant temporary visitor access
  • Customize access duration and usage
  • Easy user registration
  • Visitor access without app installation
Features
Read full description

HC Key opens all the doors to your favourite places! Hartmann’s HC Key application eliminates the need to carry physical credentials and allows you to unlock doors swiftly and with ease, using your smartphone. KEY FEATURES - HC Key offers an easy to use and interactive interface that makes unlocking doors effortless. - User registration on the HC Key application is easy and takes only seconds. - Replace traditional credentials by using your smartphone. - Grant temporary access to visitors for a predetermined time frame and amount of uses. - Visitors are not required to have the HC Key application installed to use their visitor credentials. VISITOR ACCESS HC Key allows you to create, customize, and grant visitor access credentials directly in the application. Determine the time frame and amount of use for the credential then share this with the visitor. Visitors are not required to have the HC Key application installed to use their credentials. Administrators have the ability to allow or deny users from granting visitors access as well as revoking a visitor pass after it is issued. HOW IT WORKS - HC Key only works with the PROTECTOR.Net software system. - Registration requires users to request credentials from their system administrator. If you’re interested in using HC Key in your company please visit www.hartmann-controls.com to learn more about our access control system.

About

Authenticator App ©

This app generates Time-based One-time Passwords (TOTP) for secure two-factor authentication (2FA) and multi-factor authentication (MFA). It simplifies logins by scanning QR codes and storing encrypted account data, offering backup and sync features.

Highlights
  • Generates Time-based One-time Passwords (TOTP)
  • Supports Two-Factor Authentication (2FA)
  • Supports Multi-Factor Authentication (MFA)
  • QR code scanning for setup
  • Encrypted data storage
  • Secure backup and sync
  • Touch ID/Face ID authorization
Features
Read full description

Two Factor Authenticator is a simple and secure Mobile Authentication app (2FA Authenticator) that generates Time-based One-time authentication Passwords (TOTP). Authenticator App to help keep your online accounts secure on supporting TOTP websites. This Authenticator app makes your login more secure! By automatically scanning a QR code, this authenticator app generates a one-time password (OTP) for two-factor authentication (2FA) or multi-factor authentication (MFA), to protect your log-in and accounts from hacking. All commonly used online services like Google, Facebook, Github, LinkedIn, Dropbox, and thousands of other cloud applications can log in using the 2FA token generated by this authenticator app. With this authenticator, you can easily log into all your online accounts without having to remember various passwords. Authenticator app features: -Easy and user friendly No account setup is required, automatically scan QR Code with this authenticator and get a one-time password to enable 2FA/MFA authentication for your login. -Secure & Private Authy Authenticate All data stored in Authenticator is always encrypted, even when it's stored in iCloud to ensure that you are the only one who can access your data with 2-step authorization. - Protect your passwords Manage & Storage your account passwords, and keeps them safe and secure behind the one password that only you know. - Backup & Sync : In 2FA Authenticator, you can always make a secure encrypted backup, in case you lose your device or switch to a new one. With Autentifikator all your tokens will automatically synchronize across all devices. -Authorize with Touch ID or Face ID Confirm your identity with the application using Touch ID or Face ID and generate one-time tokens required to log in to your online accounts. - All Popular Accounts: We support verification (but are not associated with) the most popular services including Facebook, Google Chrome, Coinbase, Binance Playstation, Steam, Amazon, Paypal, Gmail, MS Microsoft, Instagram, Discord, Epic Roblox, and thousands of other providers. Information about the auto-renewal of subscription: – Payment will be charged to iTunes Account at confirmation of purchase. – Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. – Account will be charged for renewal within 24 hours before the end of the current period. The cost depends on the selected plan. – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Privacy Policy: https://auth.intellvis.com/log/inislab/page?k=privepolicy Terms of Use: https://auth.intellvis.com/log/inislab/page?k=termsofuse

Screenshots

HC Key3 screens
Authenticator App ©4 screens

Verdict

The call

The clearest difference is review sentiment: HC Key at 100% against Authenticator App ©'s 33%. HC Key also leads on in-app purchases (none vs 10) and ads (none vs shown). Authenticator App ©'s advantage is update cadence (every 2 months vs every 6 months) and ratings volume (668 vs 121). On price and iOS requirement 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 10 in-app purchases, starting at $5.99 per 7 days. HC Key asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HC Key holds the better App Store score, 4.4 against 3.9. That said, the two scores are not equally well evidenced: Authenticator App © has 668 ratings behind it against 121, so its average is the more settled of the two. Written reviews point the same way: 100% of HC Key's written reviews are positive against 33% of Authenticator App ©'s.

UpkeepUpdate frequency

HC Key ships an update every 6 months, Authenticator App © every 2 months. Both last shipped on November 3, 2026.

Scorecard8 real differences · 2 level
HC Key versus Authenticator App ©: the parameters behind the verdict, then further details
ParameterHC KeyAuthenticator App ©
PriceFreeFree
Rating4.4 (121 ratings) — better3.9 (668 ratings)
Positive reviews100.0% of reviews — better32.6% of reviews
Number of ratings121668 — better
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac, Apple Watch — better
Requires iOS15.615 — better
Further details — not scored
Size43 MB53 MB
Age rating4+4+
DeveloperHartmann Controls CorpIntelliVision limited

Customer experience

HC Key

All ratings121 ratings
Positive83.5%
Neutral1.7%
Negative14.9%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Authenticator App ©

All ratings631 ratings
Positive72.1%
Neutral5.2%
Negative22.7%
Written reviews236 reviews
Positive32.6%
Neutral3.4%
Negative64.0%

Bugs and requests

HC Key

Not enough reviews yet to summarise bugs or requests.

Authenticator App ©

Reported bugs

3 issues
  • App crashes on launch
  • Unable to add accounts
  • Subscription issues

Requested features

3 requests
  • Free trial option
  • Easier integration with other services
  • More transparent pricing

In-app purchases

None

HC Key

No in-app purchases

10 purchases

Authenticator App ©

Subscriptions9
  • Authenticator Weekly PRO$5.997 Days
  • Authenticator Monthly PRO$9.991 Month
  • Authenticator Weekly Plan3 Days trial$9.997 Days
Show 6 more
  • Authenticator 6-Months PRO$29.996 Months
  • Authenticator Yearly Plan - Offer$29.991 Year
  • Authenticator Yearly PRO3 Days trial$39.991 Year
  • Authenticator Yearly PRO$39.991 Year
  • Authenticator Yearly Plan$49.991 Year
  • Authenticator Yearly Plan3 Days trial$49.991 Year
One-time1
  • Authenticator Lifetime PRO$99.99

Questions

Is HC Key free?
HC Key is free to download, with no in-app purchases.
Is Authenticator App © free?
Authenticator App © is free to download, with in-app purchases available.
Which has better reviews, HC Key or Authenticator App ©?
HC Key is rated higher. HC Key averages 4.4 out of 5 from 121 ratings, while Authenticator App © averages 3.9 from 668 ratings.
Do HC Key or Authenticator App © have ads?
Authenticator App © shows ads; HC Key does not.
Which is updated more often, HC Key or Authenticator App ©?
HC Key ships an update every 6 months, and Authenticator App © every 2 months. Most recently, HC Key was updated on November 3, 2026 and Authenticator App © on November 3, 2026.

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