Side by side
Chronos Authenticator vs OTPClient
Both stand on authenticator apps. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan iPhone
Chronos offers broad token import and export options alongside encrypted storage and a no-account privacy model. Its platform is narrowly limited to iPhone devices on iOS 17 or later.
Visit Chronos Authenticator Free plan Linux
OTPClient offers broad token support, migration, command-line controls, and encrypted local storage at no listed cost. Its documented attack scenarios matter when deciding how to protect an unlocked Linux machine.
Visit OTPClientThe facts
| Chronos Authenticator | OTPClient | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | iPhone | Linux |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | github.com | github.com |
| On authenticator apps | #77 of 111 | #73 of 111 |
Chronos Authenticator: what it does well
- Free open-source app
- Supports TOTP and HOTP
- Encrypted device and iCloud data
- Imports from major authenticator apps
- No account or telemetry
What to know first
- Only for iPhone
- Requires iOS 17.0 or later
- iCloud backup is optional
OTPClient: what it does well
- Supports TOTP, HOTP, and Steam Guard
- Scans QR codes from several sources
- Imports from multiple authenticator applications
- Encrypted database and byte-for-byte backups
- CLI offers table, JSON, and CSV output
What to know first
- Linux desktop availability only
- Unlocked secrets can be exposed by same-UID attacks
- Cold-boot or DMA attacks may recover RAM secrets
Alternatives to Chronos Authenticator Alternatives to OTPClient The whole list