TOTP Authenticator vs Open Authenticator by Skyost
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Open Authenticator by Skyost
This app generates Time-Based One-Time Passwords (TOTPs) to enhance online account security through two-factor authentication. It offers cross-platform syncing, a self-hostable backend, and an intuitive interface for managing your security codes.
- Generates Time-Based One-Time Passwords (TOTPs)
- Enhances online account security with 2FA
- Cross-platform token syncing
- Self-hostable backend option
- Fast and easy-to-use interface
- Open-source and free for local use
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PROTECT YOUR ONLINE ACCOUNTS WITH OPEN AUTHENTICATOR Open Authenticator generates Time-Based One-Time Passwords (TOTPs), which serve as the second factor in the 2FA process. These temporary codes are valid for a short period of time and are used alongside your password to verify your identity when logging into your accounts. This significantly enhances the security of your online accounts and protects them from unauthorized access. KEY FEATURES - Open-Source & Free to use : Our commitment to transparency and security means our app is open-source and will always remain free for local use. If it doesn't cost anything for us, then it shouldn't cost anything for you ! - Cross-Platform Compatibility : Seamlessly sync your TOTP tokens across all your devices, whether you're using iOS, macOS or another platform. - Self-Hostable Backend : You can host the backend on your own server. Your data, your choice. - A lovely crafted app : Open Authenticator has been designed to be fast and easy to use. Quickly find all your TOTPs and copy them directly from the main page ! IN SUMMARY, WHY OPEN AUTHENTICATOR ? Here are the reasons why you should download Open Authenticator : - Enhanced Security : Protect your online accounts from unauthorized access with strong 2FA. - User-Friendly Interface : Intuitive design makes it easy to add, manage, and organize your TOTP tokens. - Continuous Improvement : We're dedicated to delivering the best user experience and regularly update our app with new features and improvements. LINKS - Check it out on Github : https://github.com/openauthenticator-app/openauthenticator - Visit our website : https://openauthenticator.app LEGAL - Privacy policy : https://openauthenticator.app/privacy-policy - Terms of service : https://openauthenticator.app/terms-of-service
Screenshots
Verdict
TOTP Authenticator and Open Authenticator by Skyost both sit at 4.7 stars, but that hides the real split: 66% of TOTP Authenticator's written reviews are positive against 0% of Open Authenticator by Skyost's. TOTP Authenticator also leads on ratings volume (182 vs 12). On price, rating, update cadence and ads 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 and Open Authenticator by Skyost sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for TOTP Authenticator against 4.6 for Open Authenticator by Skyost. That said, the two scores are not equally well evidenced: TOTP Authenticator has 182 ratings behind it against 12, so its average is the more settled of the two. Written reviews are what separate them: 66% of TOTP Authenticator's written reviews are positive against 0% of Open Authenticator by Skyost's.
TOTP Authenticator ships an update every 2 weeks, Open Authenticator by Skyost fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | TOTP Authenticator | Open Authenticator by Skyost |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (182 ratings) — better | 4.6 (12 ratings) |
| Positive reviews | 65.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 182 — better | 12 |
| Update frequency | Every 2 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad, iPod, Mac |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 24 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Sparrow Code LTD | Hugo Delaunay |
Customer experience
TOTP Authenticator
Open Authenticator by Skyost
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
Open Authenticator by Skyost
- Contributor Plan: Monthly$0.991 Month
- Contributor Plan: Annual$9.991 Year
Questions
Is TOTP Authenticator free?
Is Open Authenticator by Skyost free?
Which has better reviews, TOTP Authenticator or Open Authenticator by Skyost?
Do TOTP Authenticator or Open Authenticator by Skyost have ads?
Which is updated more often, TOTP Authenticator or Open Authenticator by Skyost?
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