4OTP

Spec sheet

Purpose

4OTP generates six-digit time-based one-time passwords that change every 30 seconds to help secure online accounts.Read 4 Oct 2026 · 4otp.com

Free plan

YesRead 22 Sep 2026 · 4otp.com

Support

The maker directs users to email [email protected] and says it will respond as quickly as possible.Read 4 Oct 2026 · 4otp.com

Code management

The app supports code search, pinning, renaming, automatic icons, next-code display, and recovery of deleted codes.Read 4 Oct 2026 · 4otp.com

Code type

totpRead 22 Sep 2026 · 4otp.com

Device limit

The Sync plan supports up to 50 devices.Read 4 Oct 2026 · 4otp.com

Encrypted backup

YesRead 22 Sep 2026 · 4otp.com

Encrypted backups

Users can export codes in a fully encrypted backup file and restore that file on another device.Read 4 Oct 2026 · 4otp.com

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.Read 4 Oct 2026 · 4otp.com

Import and export

Users can import codes from Google Authenticator and export codes to Google Authenticator or compatible apps.Read 4 Oct 2026 · 4otp.com

Languages

The apps include 22 languages, with device-language detection and an option to choose a language in settings.Read 4 Oct 2026 · 4otp.com

Maker and Linux

The About page identifies Weeblr as the maker and says Linux support is a goal, but is not available currently.Read 4 Oct 2026 · 4otp.com

Multi-device sync

YesRead 22 Sep 2026 · 4otp.com

Offline use

The apps can work offline without an account; an account is used for the optional Sync service.Read 4 Oct 2026 · 4otp.com

Password recovery limit

The maker says it cannot decrypt codes without the password, so losing the password means losing access to the codes.Read 4 Oct 2026 · 4otp.com

Sharing and access control

Users can create separate Sync access keys for devices or other people and delete keys to revoke access.Read 4 Oct 2026 · 4otp.com

Supported platforms

Windows,macOS,iOS,AndroidRead 22 Sep 2026 · 4otp.com

Supported versions

The download page lists Windows 10 or newer, macOS 10.13 or newer, Android 12 or newer, and iOS 16 or newer.Read 4 Oct 2026 · 4otp.com

Sync history

Sync records the last 50 changes and lets users revert their devices to a previous code-list version.Read 4 Oct 2026 · 4otp.com

Plans and prices

Every 4OTP plan and price →

Where Specifiction places it

• Authenticator apps#22 of 1118.5