Comparison

One Time vs Keylet

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

Head to head
About

One Time

Securely store and manage your two-factor authentication tokens using iCloud Keychain. This privacy-focused client supports various token types and generation methods, syncing seamlessly across your Apple devices without needing an extra account.

Highlights
  • Store tokens in iCloud Keychain
  • Add tokens via QR scanner or URL
  • Supports TOTP and HOTP
  • Syncs across iCloud devices
  • Open source and privacy-focused
  • Search tokens by issuer or account
Read full description

One-Time Password client. Store your software Two-Factor Authentication tokens securely in iCloud Keychain. No additional account required, sync between your iCloud devices. This app was designed with privacy and security in mind. The app is open source at https://github.com/leptos-null/OneTime and never connects to the internet. Features: - Add Software Two Factor Tokens using: - QR scanner in-app - Open otpauth URL - QR codes in saved images - Drag-and-drop QR code into app - Manually enter generator configuration - Store tokens in iCloud Keychain - Copy current factor code using long press or 3D Touch - Edit the name of the issuer and account of tokens - Search tokens by issuer or account name - Supports tokens of: - 1 to 10 digits - SHA1, MD5, SHA256, SHA384, SHA512, and SHA224 hashing algorithms - Time based factor with any time step/period (TOTP) - Counter based factor (HOTP)

About

Keylet

Features
Read full description

Keylet is the privacy-first authenticator that fills your 2FA codes right above the keyboard — without opening the app, and without ever showing a code on screen. From the makers of Authenticator+ — and switching is effortless. Import your accounts in seconds, straight from Authenticator+, Google Authenticator, Authy, Microsoft, 1Password and more — or even from a single screenshot, with no second device needed. Your secrets never leave your phone. Everything lives in an encrypted, zero-knowledge vault (AES-256-GCM) that only you can open. No account. No cloud. No tracking. No ads. WHY KEYLET • AutoFill, done right — tap a verification-code field and Keylet offers the right code. It fills it; it never displays it. Nothing to shoulder-surf. • Import in seconds — from Authenticator+, Google Authenticator, Authy, Microsoft, 1Password, a backup file, or a screenshot. No second device required. • Multiple vaults — keep work and personal completely separate, each encrypted on its own. • Encrypted sharing — hand a code to someone you trust over end-to-end encryption, with a self-destructing expiry. • Backed up, safely — automatic daily encrypted backups on your device, plus password-protected export. No cloud needed. • Yours to organise — biometric lock per account, categories, recovery keys and home-screen widgets. • No ads. Ever. Unlimited accounts, free. Keylet keeps your second factor exactly where it belongs: in your hands, encrypted, and out of sight. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://studiofifteen.nl/app/keylet/privacy

Screenshots

One Time4 screens
Keylet4 screens

Verdict

The call

The clearest difference is in-app purchases: One Time at none against Keylet's 3. One Time also leads on device support (5 vs 2) and iOS requirement (10.0 vs 16.4). Keylet's advantage is update cadence (every 5 days vs every 7 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. Keylet sells 3 in-app purchases, starting at $2.99 per month. One Time asks for nothing beyond the download.

UpkeepUpdate frequency

One Time ships an update every 7 months, Keylet every 5 days. Both last shipped on September 17, 2026.

Scorecard4 real differences · 6 level
One Time versus Keylet: the parameters behind the verdict, then further details
ParameterOne TimeKeylet
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 7 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac, Apple Watch — betteriPhone, Apple Watch
Requires iOS10.0 — better16.4
Further details — not scored
Size2 MB108 MB
Age rating4+4+
DeveloperLateef SanfordStudio Fifteen

In-app purchases

None

One Time

No in-app purchases

3 purchases

Keylet

Subscriptions2
  • Keylet Pro – Monthly$2.991 Month
  • Keylet Pro – Yearly$12.991 Year
One-time1
  • Keylet Pro – Lifetime$44.99

Questions

Is One Time free?
One Time is free to download, with no in-app purchases.
Is Keylet free?
Keylet is free to download, with in-app purchases available.
Do One Time or Keylet have ads?
Neither One Time nor Keylet shows ads.
Which is updated more often, One Time or Keylet?
One Time ships an update every 7 months, and Keylet every 5 days. Most recently, One Time was updated on September 17, 2026 and Keylet on September 17, 2026.

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