Comparison

OTP Authenticator vs OTP

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

Head to head
About

OTP Authenticator

Features
Read full description

Swiss SafeLab OTP Authenticator is a free strong one-time password app fully compliant to the mOTP specification (http://motp.sourceforge.net/). mOTP is based on time synchronized one-time-passwords. Swiss SafeLab OTP Authenticator Features: - MUI Support (English, German, Swiss German, French, Italian, Spanish) - multiple accounts with individual mOTP Secret and bookmark - supports bookmarks - define mOTP Secret by - manual mOTP Secret input - shaking the device - random seed input - supports 4 digit PIN (as by specification) - supports alphanumeric PIN - permanently hide mOTP Secret after profile creation - displays current epoch time, local time and local time zone - copy-to-clipboard support - option to generate new mOTPs without the requirement of entering PIN again Swiss SafeLab OTP Authenticator is supported by our pure software-based two factor authentication solution Swiss SafeLab M.ID Suite (https://www.swiss-safelab.com/mid/).

About

OTP

This app generates secure one-time passwords for two-factor authentication on your device. It supports various protocols, allows easy account setup via QR codes or manual entry, and offers robust security features like biometric locks and encrypted backups.

Highlights
  • TOTP & HOTP code generation
  • QR code scanning for setup
  • Biometric app lock (Face ID/Touch ID)
  • Encrypted data export/import
  • Account grouping and organization
  • Dark Mode support
  • iCloud sync and backup
Features
Read full description

OTP-Auth is a beautifully designed two-factor authentication (2FA) app that generates one-time passwords on your iPhone. Supporting both TOTP and HOTP protocols, it adds an essential layer of security to all your online accounts. KEY FEATURES: - Generate TOTP & HOTP verification codes offline - Scan QR codes or add accounts manually - Tap to reveal code and copy to clipboard - Face ID & Touch ID biometric app lock - Dark Mode with system, light, and dark themes - iCloud sync and backup across devices - Export & import data with AES-256-GCM encryption - Import from Google Authenticator, 2FAS, and Aegis - 60+ branded service icons with auto-matching - Account grouping with drag-and-drop reorder - Search and sort by name, type, or custom order - Modern card-style UI with smooth animations SECURITY FIRST: Your authentication secrets never leave your device or your iCloud. Encrypted exports use AES-256-GCM. Biometric authentication keeps your codes private even if someone has your phone. IMPORT & EXPORT: Easily migrate from other authenticator apps. OTP-Auth supports encrypted JSON, plain text URI, 2FAS backup, Aegis vault, and Google Authenticator QR migration. Export your data securely with password-protected encryption. ORGANIZE YOUR WAY: Group accounts into custom folders, drag and drop to reorder, and use the built-in search to find any account instantly. Hide codes by default and reveal with a tap. PERMISSIONS: Camera access is required for scanning QR codes to add accounts. Learn more about OTP verification: https://www.wikiwand.com/en/One-time_password

Screenshots

OTP Authenticator4 screens
OTP4 screens

Verdict

The call

The clearest difference is in-app purchases: OTP Authenticator at none against OTP's 1. OTP Authenticator also leads on iOS requirement (7.0 vs 9.3). On price, update cadence, ads and device support 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. OTP sells 1 one-off in-app purchase. OTP Authenticator asks for nothing beyond the download.

UpkeepUpdate frequency

OTP Authenticator ships an update every 5 months, OTP every 6 months. The most recent releases landed on September 20, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 8 level
OTP Authenticator versus OTP: the parameters behind the verdict, then further details
ParameterOTP AuthenticatorOTP
PriceFreeFree
Rating—3.6 (18 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—18 — better
Update frequencyEvery 5 months — betterEvery 6 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS7.0 — better9.3
Further details — not scored
Size16 MB27 MB
Age rating4+4+
DeveloperSwiss SafeLab GmbH浩 王

In-app purchases

None

OTP Authenticator

No in-app purchases

1 purchases

OTP

One-time1
  • OTPAuth Premium$1.99

Questions

Is OTP Authenticator free?
OTP Authenticator is free to download, with no in-app purchases.
Is OTP free?
OTP is free to download, with in-app purchases available.
Do OTP Authenticator or OTP have ads?
Neither OTP Authenticator nor OTP shows ads.
Which is updated more often, OTP Authenticator or OTP?
OTP Authenticator ships an update every 5 months, and OTP every 6 months. Most recently, OTP Authenticator was updated on September 20, 2026 and OTP on September 29, 2026.

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