Comparison

RSA Authenticator (SecurID) vs Saybolt Viscosity

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

Head to head
About

RSA Authenticator (SecurID)

This app provides multi-factor authentication for enterprises, offering passwordless security through device-bound passkeys. It supports various authentication methods like OTP, biometrics, and push notifications to secure digital access.

Highlights
  • Multi-Factor Authentication (MFA)
  • Passwordless Security with Passkeys
  • One-Time Passcodes (OTP)
  • Push Notifications
  • Biometric Authentication
  • QR Code Authentication
Currently charting
Read full description

RSA Authenticator App Secure your digital life and streamline access with the RSA Authenticator App. Designed for enterprises and highly regulated industries, RSA offers a trusted way to secure authentication regardless of your environment. Multi-Factor Authentication (MFA) Made Easy Protect your accounts with RSA's diverse multi-factor authentication (MFA) options, including one-time passcodes (OTP), QR codes, code matching, push notifications, biometrics, and hardware authenticators for an extra layer of security. RSA provides device-bound passkeys that are seamless and phishing-resistant, ensuring a smooth experience across your apps and services. Passwordless Security, Simplified Forget passwords; use passkeys. Use your device-bound passkey for fast, secure, and frictionless authentication—perfect for organizations looking to reduce risks and boost workforce productivity. Note: Your company must be an RSA customer to use this app. Contact your help desk administrator if you did not receive the information required to register your device. The RSA Authenticator app is an update to the existing SecurID 4.X app and a replacement for SecurID Authenticate 3.9.x app. Please refer to the “What’s New” section on macOS and iOS App Store for further details.

About

Saybolt Viscosity

This application serves as a calculator for converting viscosity and temperature values for petroleum fuels. It allows users to convert Kinematic Viscosity in Centistokes to desired target values across different temperature scales. In landscape mode, it transforms into a slider for visual comparison of viscosity units.

Highlights
  • Viscosity/Temperature conversion calculator
  • Converts Kinematic Viscosity (cSt)
  • Supports Fahrenheit and Celsius
  • Landscape slider for unit comparison
  • Compares Centistokes to Saybolt Universal Seconds and Furol
Read full description

Welcome to the Viscosity/Temperature conversion app developed by Saybolt. This App is a handy Viscosity/Temperature conversion calculator for petroleum fuels. The calculator converts the Kinematic Viscosity in Centistokes (cSt) at a reference Temperature in Fahrenheit or Celcius to the desired target value. The App changes into a traditional Viscosity/Temperature slider when the mobile device is held in landscape position. By reading the slider scale under the hairline Kinematic Viscosity units can be compared, such as the Saybolt Universal Seconds or Saybolt Seconds Furol, with the nowadays more widely used Centistokes. Temperature and viscosity conversions with the slider are indicative.

Screenshots

RSA Authenticator (SecurID)4 screens
Saybolt Viscosity3 screens

Verdict

The call

The clearest difference is ratings volume: RSA Authenticator (SecurID) at 335 against Saybolt Viscosity's 2. RSA Authenticator (SecurID) also leads on update cadence (every 3 months vs every 14 months) and chart position (#161 vs unranked). Saybolt Viscosity's advantage is rating (3.0 vs 2.7) and iOS requirement (9.3 vs 16.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Saybolt Viscosity holds the better App Store score, 3.0 against 2.7. That said, the two scores are not equally well evidenced: RSA Authenticator (SecurID) has 335 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

RSA Authenticator (SecurID) ships an update every 3 months, Saybolt Viscosity every 14 months. The most recent releases landed on November 10, 2026 and November 1, 2026 respectively.

Scorecard5 real differences · 6 level
RSA Authenticator (SecurID) versus Saybolt Viscosity: the parameters behind the verdict, then further details
ParameterRSA Authenticator (SecurID)Saybolt Viscosity
PriceFreeFree
Rating2.7 (335 ratings)3.0 (2 ratings) — better
Positive reviews26.6% of reviews—
Number of ratings335 — better2
Update frequencyEvery 3 months — betterEvery 14 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#161 — better—
DevicesiPhone, MaciPhone, iPad, iPod — better
Requires iOS16.09.3 — better
Further details — not scored
Size64 MB3 MB
Age rating4+4+
DeveloperRSA SecuritySaybolt International B.V.

Customer experience

RSA Authenticator (SecurID)

All ratings331 ratings
Positive37.5%
Neutral10.0%
Negative52.6%
Written reviews571 reviews
Positive26.6%
Neutral12.4%
Negative60.9%

Saybolt Viscosity

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

RSA Authenticator (SecurID)

Reported bugs

4 issues
  • App crashes on launch
  • Token import/sync issues
  • Incompatibility with newer iOS versions
  • Incorrect token generation on wrong PIN entry

Requested features

5 requests
  • Add Apple Watch support
  • Implement Face ID/Touch ID authentication
  • Allow copying/pasting of token
  • Provide option to customize notification sounds
  • Add widget for quick token access

Saybolt Viscosity

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

RSA Authenticator (SecurID)

No in-app purchases

None

Saybolt Viscosity

No in-app purchases

Questions

Is RSA Authenticator (SecurID) free?
RSA Authenticator (SecurID) is free to download, with no in-app purchases.
Is Saybolt Viscosity free?
Saybolt Viscosity is free to download, with no in-app purchases.
Which has better reviews, RSA Authenticator (SecurID) or Saybolt Viscosity?
Saybolt Viscosity is rated higher. RSA Authenticator (SecurID) averages 2.7 out of 5 from 335 ratings, while Saybolt Viscosity averages 3.0 from 2 ratings.
Do RSA Authenticator (SecurID) or Saybolt Viscosity have ads?
Neither RSA Authenticator (SecurID) nor Saybolt Viscosity shows ads.
Which is updated more often, RSA Authenticator (SecurID) or Saybolt Viscosity?
RSA Authenticator (SecurID) ships an update every 3 months, and Saybolt Viscosity every 14 months. Most recently, RSA Authenticator (SecurID) was updated on November 10, 2026 and Saybolt Viscosity on November 1, 2026.

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