2FA Authenticator (2FAS) vs GymMaster QR Scanner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
2FA Authenticator (2FAS)
Securely log in to your online accounts with two-factor authentication. This app protects your personal data and passwords from cyber threats with a simple, private, and open-source solution. It offers easy token restoration, app protection, and offline functionality.
- Two-factor authentication
- Token backup and restore
- App protection with passcode/biometrics
- Open-source and transparent
- Offline functionality
- Cross-device sync
- One-tap authentication with browser extensions
Read full descriptionHide full description
2FAS is the easiest way to enable two-factor authentication (or multi-factor authentication) to verify your identity and securely log in to accounts to keep your personal data and passwords protected from cyber threats — all from one app, 100% free! The world’s most secure, private, and simple 2FA app. Secure: • Easily restore your tokens with backups. • Add app protection with your passcode or biometrics. • 2FAS is open-source, transparent, and community-driven. Simple: • 2FAS syncs across your mobile devices. • An interface designed for simplicity. • One-tap authentication with 2FAS Browser Extensions. • Multi-language support. • Quick guides for setup and support. Private: • 2FAS works offline. • 2FAS doesn't store any passwords or metadata. • 100% anonymous use, no account required. It’s not too late to protect your data, so what are you waiting for? Protect your online accounts and services now with TOTP and HOTP algorithms. Start using the 2FAS authenticator app today! If you have any questions, talk with us on our Discord server: https://discord.gg/q4cP6qh2g5 Learn more about 2FAS: • Check our GitHub repository: https://github.com/twofas • Visit our website at: https://2fas.com/ • Follow us on X: https://x.com/2FAS_com • Subscribe on YouTube: https://www.youtube.com/@2FAS
GymMaster QR Scanner
Read full descriptionHide full description
Σκάνερ QR κωδικών για καταχώρηση παρουσίας μέσω της εφαρμογής GymMaster. Η εφαρμογή GymMaster QR Scanner δίνει τη δυνατότητα στους διαχειριστές του γυμναστηρίου να καταχωρούν άμεσα την παρουσία των μελών, σκανάροντας έναν μοναδικό QR κωδικό.
Screenshots
Verdict
The clearest difference is update cadence: GymMaster QR Scanner at every 9 days against 2FA Authenticator (2FAS)'s monthly. GymMaster QR Scanner also leads on iOS requirement (12.0 vs 18.6). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
2FA Authenticator (2FAS) ships an update monthly, GymMaster QR Scanner every 9 days. The most recent releases landed on October 28, 2026 and October 7, 2026 respectively.
| Parameter | 2FA Authenticator (2FAS) | GymMaster QR Scanner |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (36K ratings) — better | — |
| Positive reviews | 77.3% of reviews | — |
| Number of ratings | 36K — better | — |
| Update frequency | Monthly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 81 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Two Factor Authentication Service Inc. | Kostas Kousinovalis |
Bugs and requests
2FA Authenticator (2FAS)
Reported bugs
3 issues- Tokens disappearing after device changes
- Push notification failures
- Incompatibility with older devices
Requested features
5 requests- Alphanumeric passcode option
- Custom icon uploads
- Apple Watch app
- Desktop/web app
- Improved support and communication
GymMaster QR Scanner
Not enough reviews yet to summarise bugs or requests.
In-app purchases
2FA Authenticator (2FAS)
No in-app purchases
GymMaster QR Scanner
No in-app purchases
Questions
Is 2FA Authenticator (2FAS) free?
Is GymMaster QR Scanner free?
Do 2FA Authenticator (2FAS) or GymMaster QR Scanner have ads?
Which is updated more often, 2FA Authenticator (2FAS) or GymMaster QR Scanner?
Other comparisons















