Comparison

Thetis Authenticator vs Secure Storage

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

Head to head
About

Thetis Authenticator

Manage your FIDO2 security keys for passwordless login and two-factor authentication. Supports NFC and Type-C connections for seamless integration across devices. Offers one-time password management for services not yet supporting FIDO2.

Highlights
  • FIDO2 passwordless login
  • Enhanced two-factor authentication
  • One-time password management
  • Optimized for iPad
  • NFC and Type-C compatibility
  • Cross-platform support
  • Phishing-resistant authentication
Read full description

The Thetis Authenticator App provides seamless management of your FIDO2 security keys, enabling passwordless login, two-factor authentication (2FA), and one-time password (OTP) management. Fully optimized for iPhone and iPad, the app supports NFC and Type-C connections, ensuring compatibility across all your devices. With full support for the FIDO2 security standards, Thetis Authenticator empowers you with fast and phishing-resistant authentication. Whether managing business or personal accounts, you can easily integrate Thetis FIDO2 into your daily workflow. Key Features: ●. FIDO2 Passwordless Login: Replace passwords with strong, FIDO2-based authentication for secure access across platforms. ●. Enhanced 2FA: Strengthen your account security with FIDO2-based two-factor authentication for supported services. ●. Complete OTP Management: Add and manage one-time passwords (OTP) for services that don’t support FIDO2. ●. Optimized for iPad: Manage your keys with ease on a larger screen, with full iPad optimization. ●. NFC and Type-C Compatibility: Effortlessly connect using NFC or Type-C for fast key setup. ●. Cross-Platform Support: Use Thetis FIDO2 for services like Google, Dropbox, Microsoft, AWS, and more. ●. Phishing-Resistant Authentication: Built on the FIDO2 standard, ensuring your accounts are protected. Simplify your security and manage your digital identity with ease using Thetis FIDO2.

About

Secure Storage

Features
Read full description

Secure Storage is a private, offline-first vault for the things you cannot afford to lose. Credit and debit cards, passwords, and documents, all encrypted on your device and locked behind Face ID. Your data never touches our servers. There are no accounts and no sign-ups: you set a master password, and everything is encrypted locally with strong AES encryption and Argon2id key derivation. FEATURES - Cards, passwords, and documents in one encrypted vault - Face ID / Touch ID unlock with a master password fallback - Password AutoFill across apps and Safari - Store documents and open them from the Files app - Card scanner to add cards with your camera - Clean, fast, native design SECURE STORAGE PRO - Unlimited cards, passwords, and documents - Optional iCloud sync, end-to-end encrypted and keyed to your master password, so only your devices can read it - Dark mode - Premium animated and custom card designs Available monthly or yearly (7-day free trial on the yearly plan), or as a one-time Lifetime purchase. PRIVACY No servers, no tracking, no data collection. Your vault stays on your device; if you turn on iCloud sync, only an encrypted backup is stored in your own private iCloud. Note: your master password cannot be recovered. If you forget it, your data cannot be decrypted. Please remember it. Privacy Policy: https://securestorage.app/privacy Terms of Use: https://securestorage.app/terms

Screenshots

Thetis Authenticator4 screens
Secure Storage4 screens

Verdict

The call

The clearest difference is in-app purchases: Thetis Authenticator at none against Secure Storage's 3. Thetis Authenticator also leads on device support (3 vs 1) and iOS requirement (13.0 vs 26.0). Secure Storage's advantage is update cadence (daily vs every 9 months). On price 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. Secure Storage sells 3 in-app purchases, starting at $1.99 per month. Thetis Authenticator asks for nothing beyond the download.

UpkeepUpdate frequency

Thetis Authenticator ships an update every 9 months, Secure Storage daily. The most recent releases landed on November 4, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 6 level
Thetis Authenticator versus Secure Storage: the parameters behind the verdict, then further details
ParameterThetis AuthenticatorSecure Storage
PriceFreeFree
Rating3.5 (4 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 9 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better26.0
Further details — not scored
Size3 MB31 MB
Age rating4+4+
DeveloperRazzo Tech CorporationSouvik Biswas

In-app purchases

None

Thetis Authenticator

No in-app purchases

3 purchases

Secure Storage

Subscriptions2
  • Monthly$1.991 Month
  • Yearly7 Days trial$19.991 Year
One-time1
  • Lifetime$39.99

Questions

Is Thetis Authenticator free?
Thetis Authenticator is free to download, with no in-app purchases.
Is Secure Storage free?
Secure Storage is free to download, with in-app purchases available.
Do Thetis Authenticator or Secure Storage have ads?
Neither Thetis Authenticator nor Secure Storage shows ads.
Which is updated more often, Thetis Authenticator or Secure Storage?
Thetis Authenticator ships an update every 9 months, and Secure Storage daily. Most recently, Thetis Authenticator was updated on November 4, 2026 and Secure Storage on November 6, 2026.

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