One vs TOTP Authenticator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Generates eight-digit passwords
- Passwords valid for one minute
- Enhances online service security
- Disposable password functionality
- Requires OTP application at service
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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.
TOTP Authenticator
This app generates time-based one-time passwords (TOTP) for enhanced account security. It supports two-factor authentication (2FA) by providing 6-digit codes required by many websites and services for login. The app includes extensive tutorials to guide users through setting up 2FA with various platforms.
- Generates 6-digit TOTP codes
- Supports two-factor authentication (2FA)
- QR code scanning for setup
- Manual secret key entry
- Over 100 step-by-step setup tutorials
- Privacy focused
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TOTP Authenticator generates 6-digit TOTP codes. Websites (or example Arbeitsagentur, NextCloud etc.) request these codes. This security feature is called two factor authentication or 2FA. How to sign in using TOTP? 1. Go to the “Security” section 2. Enable TOTP login 3. Scan the QR code or copy the secret key into your Authenticator 4. Done — 2FA is now enabled. From now on, you’ll need to enter a TOTP code from the Authenticator app whenever you log in The app also includes over 100 step-by-step tutorials with screenshots showing how to set up TOTP for various websites. Privacy Policy: https://totp-authenticator.com/privacy-policy/appstore Terms of Use: https://totp-authenticator.com/terms-of-use/appstore
Screenshots
Verdict
The clearest difference is review sentiment: TOTP Authenticator at 66% against One's 13%. TOTP Authenticator also leads on update cadence (every 11 days vs every 5 months) and device support (5 vs 2). One's advantage is in-app purchases (none vs 4). On price, ads and iOS requirement 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. TOTP Authenticator sells 4 in-app purchases, starting at $5.99 per 7 days. One asks for nothing beyond the download.
One ships an update every 5 months, TOTP Authenticator every 11 days. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.
| Parameter | One | TOTP Authenticator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (174 ratings) — better |
| Positive reviews | 12.5% of reviews | 66.2% of reviews — better |
| Number of ratings | — | 174 — better |
| Update frequency | Every 5 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac, Apple Watch — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 49 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | NTT DATA GROUP CORPORATION | Sparrow Code LTD |
Customer experience
One
TOTP Authenticator
In-app purchases
One
No in-app purchases
TOTP Authenticator
- TOTP OTP Codes (1 week)7 Days trial$5.997 Days
- TOTP OTP Codes (1 month)7 Days trial$9.991 Month
- TOTP OTP Codes (1 year)7 Days trial$59.991 Year
- Unlimited TOTP OTP Codes$79.99
