Comparison

Cato Client vs Otpkey Authenticator

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

Head to head
About

Cato Client

This app provides secure access for business users to connect to corporate resources from their mobile devices. It allows seamless connectivity to on-premise and cloud-based systems, enabling productivity for traveling professionals.

Highlights
  • Secure mobile connectivity
  • Access to corporate resources
  • Connect to Cato Cloud
  • On-premise and cloud access
  • For traveling business users
Features
Read full description

The Cato Client enables secure connectivity from mobile devices used by businesses to the Cato Cloud service. Traveling business users can easily connect to corporate resources on premise and in the cloud from everywhere.

About

Otpkey Authenticator

Enhance your online security with multi-factor authentication. This app generates one-time passwords for various services, even offline, and supports standard TOTP/HOTP protocols. It offers features like QR code scanning, auto-hiding codes, and biometric authentication.

Highlights
  • Multi-factor authentication
  • Offline OTP generation
  • QR code scanning and export
  • Biometric authentication support
  • Clipboard code copying
  • Widget and Watch App support
Features
Read full description

Otpkey Authenticator generates one-time passwords for two-factor authentication on iPhone, iPad, Mac and Apple Watch, and keeps them in sync through iCloud Keychain. It works completely offline. No account, no server: your secrets stay in the system Keychain on your devices, protected by your passcode, Face ID or Touch ID. Otpkey Authenticator works with every service that supports standard TOTP or HOTP codes, including Google, Microsoft, Amazon, GitHub, Facebook, X, Dropbox, Discord, PayPal, AWS, Synology and many more. Switching from Google Authenticator? Scan its "Export accounts" QR code and all of your accounts are imported at once. Features ======= - Available for iPhone, iPad, Mac and Apple Watch, synced through iCloud Keychain - Folders and search to organize many accounts - Scan QR codes to add accounts - Import all accounts from a Google Authenticator export QR code - Export any account as a QR code - Encrypted, password-protected backup and restore (PEM file format) - Face ID / Touch ID lock - Hide codes on screen, copy with one tap - Custom account icons - iOS: Home Screen widgets (small, medium and large) - iOS: Apple Watch app with complication - macOS: Lives in the menu bar, always one click away - macOS: Scan QR codes straight from the screen - macOS: Launch at login, auto hide - macOS: Drag and drop Specifications =========== - Type: Time-based (TOTP), Counter-based (HOTP) - Algorithm: SHA-1, SHA-256, SHA-512 - Digits: 6, 8, 10 - Period: 30, 60 seconds Standards ======= TOTP - Time-based One-Time Password Algorithm (RFC 6238) HOTP - HMAC-Based One-Time Password Algorithm (RFC 4226)

Screenshots

Cato Client4 screens
Otpkey Authenticator4 screens

Verdict

The call

The clearest difference is rating: Cato Client at 3.6 against Otpkey Authenticator's 1.0. Cato Client also leads on ratings volume (14 vs 2). Otpkey Authenticator's advantage is device support (5 vs 2) and iOS requirement (13.0 vs 16.0). On price, review sentiment, update cadence 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Cato Client holds the better App Store score, 3.6 against 1.0. That said, the two scores are not equally well evidenced: Cato Client has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 50% and 50% positive.

UpkeepUpdate frequency

Cato Client ships an update every 3 months, Otpkey Authenticator every 2 months. The most recent releases landed on September 21, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
Cato Client versus Otpkey Authenticator: the parameters behind the verdict, then further details
ParameterCato ClientOtpkey Authenticator
PriceFreeFree
Rating3.6 (14 ratings) — better1.0 (2 ratings)
Positive reviews50.0% of reviews50.0% of reviews
Number of ratings14 — better2
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod, Mac, Apple Watch — better
Requires iOS16.013.0 — better
Further details — not scored
Size29 MB22 MB
Age rating4+4+
DeveloperCato Networks Ltd.Certchip Corp

Customer experience

Cato Client

All ratings14 ratings
Positive57.1%
Neutral7.1%
Negative35.7%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Otpkey Authenticator

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Cato Client

No in-app purchases

None

Otpkey Authenticator

No in-app purchases

Questions

Is Cato Client free?
Cato Client is free to download, with no in-app purchases.
Is Otpkey Authenticator free?
Otpkey Authenticator is free to download, with no in-app purchases.
Which has better reviews, Cato Client or Otpkey Authenticator?
Cato Client is rated higher. Cato Client averages 3.6 out of 5 from 14 ratings, while Otpkey Authenticator averages 1.0 from 2 ratings.
Do Cato Client or Otpkey Authenticator have ads?
Neither Cato Client nor Otpkey Authenticator shows ads.
Which is updated more often, Cato Client or Otpkey Authenticator?
Cato Client ships an update every 3 months, and Otpkey Authenticator every 2 months. Most recently, Cato Client was updated on September 21, 2026 and Otpkey Authenticator on October 2, 2026.

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