2FA Authenticator (2FAS) vs Chronos Authenticator
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
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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
Chronos Authenticator
This open-source app provides secure two-factor authentication using time-based and counter-based methods. It offers end-to-end encryption for token data and optional iCloud backup and sync for convenience. Easily import and export your authentication tokens.
- Open-source
- End-to-end encrypted token storage
- Optional iCloud backup and sync
- Token export and import
- Anonymous usage (no account required)
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Chronos is an open-source two-factor authentication (2FA) app designed to deliver robust security and reliable backup features. It supports both time-based (TOTP) and counter-based (HOTP) authentication methods. Features: • Open-source • End-to-end encrypted: Only encrypted token data is stored on the device and in iCloud • Backup & Sync (optional): Effortlessly backup and sync your data with iCloud • Export Tokens: Easily export your tokens for backup or transfer • Import Tokens: Easily import your tokens from other authenticators • Anonymous: No telemetry & app account required
Screenshots
Verdict
The clearest difference is ratings volume: 2FA Authenticator (2FAS) at 35K against Chronos Authenticator's 3. 2FA Authenticator (2FAS) also leads on device support (3 vs 1). Chronos Authenticator's advantage is update cadence (every 6 days vs monthly) and review sentiment (100% vs 78%). On price, ads, in-app purchases and monetization model 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.
Chronos Authenticator holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: 2FA Authenticator (2FAS) has 35K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 78% of 2FA Authenticator (2FAS)'s written reviews are positive against 100% of Chronos Authenticator's.
2FA Authenticator (2FAS) ships an update monthly, Chronos Authenticator every 6 days. The most recent releases landed on September 30, 2026 and September 16, 2026 respectively.
| Parameter | 2FA Authenticator (2FAS) | Chronos Authenticator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (35K ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 77.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 35K — better | 3 |
| Update frequency | Monthly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 80 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Two Factor Authentication Service Inc. | Joel-David Wong |
Customer experience
2FA Authenticator (2FAS)
Chronos Authenticator
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
Chronos Authenticator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
2FA Authenticator (2FAS)
No in-app purchases
Chronos Authenticator
No in-app purchases
Questions
Is 2FA Authenticator (2FAS) free?
Is Chronos Authenticator free?
Which has better reviews, 2FA Authenticator (2FAS) or Chronos Authenticator?
Do 2FA Authenticator (2FAS) or Chronos Authenticator have ads?
Which is updated more often, 2FA Authenticator (2FAS) or Chronos Authenticator?
Other comparisons
