Comparison

OTP Auth vs TOTP Authenticator

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

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

TOTP Authenticator

Enhance your online security with this app that generates one-time tokens for two-factor authentication. Protect your accounts from hackers by easily adding 2FA to your online services. Supports cloud sync and a Chrome extension for seamless desktop integration.

Highlights
  • Cloud Sync for backup
  • Chrome Extension for desktop
  • Dark and light theme support
  • Multi-platform and multi-device sync
  • Unlimited account support
  • Home screen widgets
  • Biometric app lock
Features
Read full description

The 2FA authenticator for people with more than five accounts. TOTP Authenticator generates the six-digit verification codes you need to sign in to Google, Microsoft, Facebook, Amazon, GitHub, PayPal and 1000+ other services — but with the cloud sync, browser push, and widgets that the other authenticators don't give you. — WHY PEOPLE SWITCH — • ENCRYPTED CLOUD SYNC — Back up to iCloud or Google Drive. Your data stays in your own cloud account; you stay in control. Restore on a new Phone in seconds. • PUSH CODES TO YOUR BROWSER — Pair our Chrome or Firefox extension once. From then on, one tap on your phone copies the right 2FA code to your desktop clipboard — ready to paste. Your security key never leaves your phone. We never see your codes. • LOCK SCREEN & HOME SCREEN WIDGETS — Pin your most-used accounts to your Lock Screen or Home Screen. Glance, tap, copied. Live countdown built in. • YOUR DATA TRAVELS WITH YOU — Already used our app on a different platform? Encrypted backups round-trip cleanly between iOS and other platforms via Google Drive. — PRIVACY BY DEFAULT — • Face ID or Touch ID lock. • Tap-to-reveal — codes stay hidden in the list until you tap. • Screen Security blocks screenshots and screen recording, on by default. • No analytics. No tracking. No servers that can leak your secrets. — ORGANISED THE WAY YOU THINK — • Eight colour-coded categories: Personal, Work, Social, Entertainment, Tools, Finance, Favourites, Other. • Instant search with one-tap category filter. • Drag to reorder. Pin to Favourites for one-tap access. • Pick an issuer icon from our library, or auto-match when you scan a QR code. • Add accounts by camera, by photo library QR scan, or by typing the key manually. • Works offline — codes are generated on your device. No network required to sign in. — WORKS WITH — Google, Apple ID, Facebook, Amazon, Microsoft, GitHub, PayPal, Dropbox, LinkedIn, Twitter / X, Instagram, Yahoo, WordPress, Epic Games, Blizzard, GoDaddy, Bitbucket, TeamViewer, Dashlane, Evernote — and 1000+ other services that support the RFC 6238 TOTP standard that Google Authenticator uses. — WHAT'S NEW IN v1.23 — Rebuilt from the ground up. Faster, cleaner, fully localised in English, German, and Japanese. iCloud sync rewritten for reliability. New Lock Screen widget. New search with category filter. New tap-to-reveal privacy mode. — PREMIUM — Cloud Sync and Browser Push are part of TOTP Premium — a one-time purchase, not a subscription. Try the app free; upgrade if and when you need them. Questions, bug reports, requests? Use the in-app Contact form or email hello@binaryboot.com — we read every message. App-based 2FA only. Does not receive or generate SMS codes.

Screenshots

OTP Auth4 screens
TOTP Authenticator4 screens

Verdict

The call

OTP Auth and TOTP Authenticator both sit at 4.6 stars, but that hides the real split: 78% of OTP Auth's written reviews are positive against 36% of TOTP Authenticator's. OTP Auth also leads on update cadence (every 2 weeks vs every 2 months) and device support (4 vs 2). TOTP Authenticator's advantage is ratings volume (3.9K vs 463). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OTP Auth sells 1 one-off in-app purchase and TOTP Authenticator sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for OTP Auth against 4.7 for TOTP Authenticator. That said, the two scores are not equally well evidenced: TOTP Authenticator has 3.9K ratings behind it against 463, so its average is the more settled of the two. Written reviews are what separate them: 78% of OTP Auth's written reviews are positive against 36% of TOTP Authenticator's.

UpkeepUpdate frequency

OTP Auth ships an update every 2 weeks, TOTP Authenticator every 2 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 5 level
OTP Auth versus TOTP Authenticator: the parameters behind the verdict, then further details
ParameterOTP AuthTOTP Authenticator
PriceFreeFree
Rating4.6 (463 ratings)4.7 (3.9K ratings) — better
Positive reviews77.9% of reviews — better36.1% of reviews
Number of ratings4633.9K — better
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size22 MB24 MB
Age rating4+4+
DeveloperRoland MoersAppyFactor

Customer experience

OTP Auth

All ratings463 ratings
Positive90.3%
Neutral2.6%
Negative7.1%
Written reviews204 reviews
Positive77.9%
Neutral5.9%
Negative16.2%

TOTP Authenticator

All ratings3,870 ratings
Positive93.4%
Neutral1.4%
Negative5.2%
Written reviews72 reviews
Positive36.1%
Neutral8.3%
Negative55.6%

User reviews

OTP Auth

From 463 App Store ratings

What we love

  • 🚀 Simple and effective
  • 🔒 Secure with backup/restore
  • 👍 Great Apple Watch support
  • 👍 Intuitive and user-friendly
  • 👍 Customizable icons and folders

Room to improve

  • 🐛 Occasional sync and widget issues
  • 🐛 Apple Watch app needs improvements
  • 🐛 Unreliable backup/restore for some users
  • 🐛 Crashes and bugs reported by a few

TOTP Authenticator

From 3.9K App Store ratings

What we love

  • 👍 Solid free basic experience
  • 🚀 Simple and effective
  • 👍 Easy to use and set up new accounts
  • 🚀 Chrome extension is cool
  • 🔒 Excellent app for 2FA

Room to improve

  • 🐛 No export functionality
  • 🐛 Impossible to recover account without paying
  • 🐛 Can't save Authy keys from sites
  • 🐛 Codes expire too fast
  • 🐛 Doesn't work with some services

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

TOTP Authenticator

Reported bugs

5 issues
  • Codes not working, invalid or expired
  • Sync issues, lost codes
  • Doesn't work with some services
  • Login screen freezes
  • Incompatible with older devices

Requested features

5 requests
  • Increase font size of codes
  • Add folder/tree organization for keys
  • Implement Face ID support
  • Add dark mode theme
  • Allow pushing multiple codes to Chrome extension at once

In-app purchases

1 purchases

OTP Auth

One-time1
  • OTP Auth Pro$3.99
2 purchases

TOTP Authenticator

One-time2
  • TOTP Premium Features$5.99
  • TOTP Default Product$5.99

Questions

Is OTP Auth free?
OTP Auth is free to download, with in-app purchases available.
Is TOTP Authenticator free?
TOTP Authenticator is free to download, with in-app purchases available.
Which has better reviews, OTP Auth or TOTP Authenticator?
TOTP Authenticator is rated higher. OTP Auth averages 4.6 out of 5 from 463 ratings, while TOTP Authenticator averages 4.7 from 3.9K ratings.
Do OTP Auth or TOTP Authenticator have ads?
Neither OTP Auth nor TOTP Authenticator shows ads.
Which is updated more often, OTP Auth or TOTP Authenticator?
OTP Auth ships an update every 2 weeks, and TOTP Authenticator every 2 months. Most recently, OTP Auth was updated on October 6, 2026 and TOTP Authenticator on October 15, 2026.

Other comparisons