Comparison

One 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

One

This utility generates a secure, eight-digit disposable password every minute. These one-time passwords are ideal for enhancing security across various online services, as they become invalid after a short period, even if compromised.

Highlights
  • Generates eight-digit passwords
  • Passwords valid for one minute
  • Enhances online service security
  • Disposable password functionality
  • Requires OTP application at service
Features
Read full description

What is One-Time Password? One-Time Password is the disposable password which is effective solely once. In this Application, a random eight digit password is generated every one minute. You can securely use the various kinds of services because the password is invalidated in one minute even if the password is stolen. For using this App, it is required to apply for the OTP at the service which adopted this App. As applying for the OTP, the email notification about the App procedure will be delivered at the email address registered.

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

One4 screens
TOTP Authenticator4 screens

Verdict

The call

The clearest difference is in-app purchases: One at none against TOTP Authenticator's 2. One also leads on iOS requirement (14.0 vs 17.0). TOTP Authenticator's advantage is review sentiment (36% vs 13%). 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. TOTP Authenticator sells 2 one-off in-app purchases. One asks for nothing beyond the download.

UpkeepUpdate frequency

One ships an update every 5 months, TOTP Authenticator every 2 months. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
One versus TOTP Authenticator: the parameters behind the verdict, then further details
ParameterOneTOTP Authenticator
PriceFreeFree
Rating—4.7 (3.9K ratings) — better
Positive reviews12.5% of reviews36.1% of reviews — better
Number of ratings—3.9K — better
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS14.0 — better17.0
Further details — not scored
Size49 MB24 MB
Age rating4+4+
DeveloperNTT DATA GROUP CORPORATIONAppyFactor

Customer experience

One

Written reviews8 reviews
Positive12.5%
Neutral12.5%
Negative75.0%

TOTP Authenticator

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

Bugs and requests

One

Not enough reviews yet to summarise bugs or requests.

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

None

One

No in-app purchases

2 purchases

TOTP Authenticator

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

Questions

Is One free?
One is free to download, with no in-app purchases.
Is TOTP Authenticator free?
TOTP Authenticator is free to download, with in-app purchases available.
Do One or TOTP Authenticator have ads?
Neither One nor TOTP Authenticator shows ads.
Which is updated more often, One or TOTP Authenticator?
One ships an update every 5 months, and TOTP Authenticator every 2 months. Most recently, One was updated on October 6, 2026 and TOTP Authenticator on October 16, 2026.

Other comparisons