Freedom251 › Authenticator apps
4OTP
What 4OTP is
4OTP is an authenticator for six-digit time-based one-time passwords that change every 30 seconds. It runs on Windows 10 or newer, macOS 10.13 or newer, Android 12 or newer, and iOS 16 or newer, and the apps work offline without an account. Users can search, pin, rename, and recover codes, view the next code, and use automatic icons. Codes can be imported from Google Authenticator and exported to Google Authenticator or compatible apps. Encrypted backup files can be restored on another device. The maker says local data uses a password-derived key and AES-GCM, while Sync uses end-to-end encryption. Sync records the last 50 changes, supports reverting to an earlier code list, and works with up to 50 devices. Free apps cost nothing, billed Free forever. 4OTP Sync costs $36 a year.
Who it suits
4OTP suits people needing TOTP codes across desktop and mobile devices, including offline use. Sync is intended for users who want encrypted multi-device access and change history.
What it does well
- Works offline without an account
- Supports Windows, macOS, iOS, Android
- Encrypted backups can be restored
- Imports and exports authenticator codes
- Sync supports up to 50 devices
What to know first
- Losing the password loses code access
- Linux support is not currently available
- Sync costs $36 a year
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free apps | Free forever · TOTP authenticator · Encrypted local storage · Encrypted backups · Offline use · No account required | Free |
| 4OTP Sync | US$36 year · Up to 50 devices · Windows, macOS, iOS, Android · sync history | $36 a year |
| 4OTP apps | Free forever · Windows, macOS, iOS, Android · no ads or tracking | Free |
As 4otp.com lists them, read 22 Sept 2026. The maker's own page has the final word.
Verdict
4OTP offers broad device support, offline operation, code migration, and encrypted backups. Its password-recovery limitation and separate paid Sync plan are important when planning access across devices.
Facts from 4OTP's own pages
- Code management
- The app supports code search, pinning, renaming, automatic icons, next-code display, and recovery of deleted codes. · 4otp.com, 4 Oct 2026
- Code type
- totp · 4otp.com, 22 Sept 2026
- Device limit
- The Sync plan supports up to 50 devices. · 4otp.com, 4 Oct 2026
- Encrypted backup
- Yes · 4otp.com, 22 Sept 2026
- Encrypted backups
- Users can export codes in a fully encrypted backup file and restore that file on another device. · 4otp.com, 4 Oct 2026
- Encryption
- The maker says 4OTP encrypts data on the device using a password-derived key and AES-GCM, and uses end-to-end encryption for Sync. · 4otp.com, 4 Oct 2026
- Free plan
- Yes · 4otp.com, 22 Sept 2026
- Import and export
- Users can import codes from Google Authenticator and export codes to Google Authenticator or compatible apps. · 4otp.com, 4 Oct 2026
- Languages
- The apps include 22 languages, with device-language detection and an option to choose a language in settings. · 4otp.com, 4 Oct 2026
- Maker and Linux
- The About page identifies Weeblr as the maker and says Linux support is a goal, but is not available currently. · 4otp.com, 4 Oct 2026
- Multi-device sync
- Yes · 4otp.com, 22 Sept 2026
- Offline use
- The apps can work offline without an account; an account is used for the optional Sync service. · 4otp.com, 4 Oct 2026
- Password recovery limit
- The maker says it cannot decrypt codes without the password, so losing the password means losing access to the codes. · 4otp.com, 4 Oct 2026
- Purpose
- 4OTP generates six-digit time-based one-time passwords that change every 30 seconds to help secure online accounts. · 4otp.com, 4 Oct 2026
- Sharing and access control
- Users can create separate Sync access keys for devices or other people and delete keys to revoke access. · 4otp.com, 4 Oct 2026
- Support
- The maker directs users to email [email protected] and says it will respond as quickly as possible. · 4otp.com, 4 Oct 2026
- Supported platforms
- Windows,macOS,iOS,Android · 4otp.com, 22 Sept 2026
- Supported versions
- The download page lists Windows 10 or newer, macOS 10.13 or newer, Android 12 or newer, and iOS 16 or newer. · 4otp.com, 4 Oct 2026
- Sync history
- Sync records the last 50 changes and lets users revert their devices to a previous code-list version. · 4otp.com, 4 Oct 2026
Where 4OTP stands on Freedom251
- Authenticator apps#34 of 111