OTP Auth vs Authenticator TOTP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OTP Auth
Enhance your account security with two-factor authentication on your iPhone and iPad. This app supports numerous popular services and offers robust encryption for all your data. It works offline and prioritizes user privacy by not collecting or transmitting personal information.
- Two-factor authentication support
- Encrypted iCloud Sync
- Siri and Apple Watch support
- Notification Center widget
- Safari extension for password pasting
- Face ID/Touch ID security
- Encrypted backups and import/export
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OTP Auth adds support for two-factor authentication to your iPhone and iPad. It can be used with Dropbox, Facebook, GitHub, Google Mail and many more. Make your accounts safe again! Features: - Ads free - Encrypted iCloud Sync - Siri Support - Apple Watch support - Notification Center widget - Safari extension for pasting passwords into websites - Secure application using Face ID/Touch ID (or password) - Create encrypted backups of all accounts - Import/Export encrypted accounts using AirDrop, iCloud, Dropbox, Mail, ... - Works offline All data stored by OTP Auth is stored using strong AES-256 encryption. This applies for all data. In particular, for both locally stored data as well as data stored in the iCloud Drive (when iCloud Sync is enabled). The password for those files never leaves your device such that noone but you can read your data. OTP Auth does not collect information about you or send them anywhere. You won't be asked to allow access to your contacts or your location. And most important: OTP Auth does not connect to the internet and will not send your accounts to someone else! (Unless you enable iCloud sync where an AES-256 encrypted copy of your accounts is stored in your iCloud Drive. The password for that copy will never leave your phone.) Follow me on Twitter: @otpauth
Authenticator TOTP
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Protect your online accounts with TOTP Authenticator — the fast, secure, and beautifully designed two-factor authentication app. Generate time-based one-time passwords (TOTP) right on your device, no internet connection required. Setting up is effortless. Just scan a QR code and your account is ready in seconds. Whether it's Google, GitHub, Amazon, Discord, or any service that supports 2FA — TOTP Authenticator has you covered. ▸ KEY FEATURES • Scan QR codes to add accounts instantly • Generate 2FA codes offline — no network needed • Lock Screen Widgets for quick access to your codes • Apple Watch app — view codes right from your wrist • Password AutoFill integration (iOS 18+) — codes fill automatically • Biometric Lock with Face ID or Touch ID • iCloud Sync across all your Apple devices • Export accounts as QR codes for easy backup or migration • Support for SHA-1, SHA-256, and SHA-512 algorithms • Available in 38 languages ▸ SECURITY FIRST Your secrets never leave your device unprotected. All sensitive data is stored in the iOS Keychain — not in plain text, not in a database. Codes are generated locally on your device, so they work even in airplane mode. Optional biometric lock adds an extra layer of protection. ▸ WIDGETS & AUTOFILL Add Lock Screen and Home Screen widgets to see your codes at a glance. With iOS 18+ Password AutoFill, your verification codes are suggested automatically when you sign in to apps and websites — no copying and pasting. ▸ PREMIUM Premium unlocks everything: • Unlimited accounts • Apple Watch companion app • iCloud Sync • Export accounts as QR codes • Biometric app lock Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel subscriptions in your Apple ID account settings. Privacy Policy: https://github.com/spiroba/Totp/blob/main/PRIVACY_POLICY.md Terms of Use: https://github.com/spiroba/Totp/blob/main/TERMS_OF_SERVICE.md
Screenshots
Verdict
The clearest difference is iOS requirement: OTP Auth at 12.0 against Authenticator TOTP's 17.6. On price, update cadence, ads and in-app purchases 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
Both are free to download. OTP Auth sells 1 one-off in-app purchase and Authenticator TOTP sells 4 in-app purchases, starting at $3.49 per 7 days. Whichever you choose, the download price is not the number that matters.
OTP Auth ships an update every 2 weeks, Authenticator TOTP fortnightly. The most recent releases landed on October 2, 2026 and September 18, 2026 respectively.
| Parameter | OTP Auth | Authenticator TOTP |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (463 ratings) — better | — |
| Positive reviews | 77.9% of reviews | — |
| Number of ratings | 463 — better | — |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, Apple Watch |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 22 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Roland Moers | Boris Spiro |
Bugs and requests
OTP Auth
Reported bugs
3 issues- Sync issues causing data loss
- Widget not displaying codes correctly
- Crashes on certain iOS versions
Requested features
4 requests- Larger text/font size options
- Alphabetical sorting of accounts
- Automatic account refresh/update
- Ability to edit account details
Authenticator TOTP
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OTP Auth
- OTP Auth Pro$3.99
Authenticator TOTP
- Weekly3 Days trial$3.497 Days
- Monthly3 Days trial$7.991 Month
- Yearly3 Days trial$49.991 Year
- Lifetime$79.99
Questions
Is OTP Auth free?
Is Authenticator TOTP free?
Do OTP Auth or Authenticator TOTP have ads?
Which is updated more often, OTP Auth or Authenticator TOTP?
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