andOTP

AndOTP

andOTP is a free and open-source two-factor authentication app for Android. It allows users to generate one-time passwords for added login security. It supports both time-based and counter-based algorithms and can import/export encrypted backups.
andOTP image
opensource android onetime-password 2fa totp hotp encryption backup

andOTP: Free Two-Factor Authentication App

Free and open-source two-factor authentication app for Android, generating one-time passwords for added login security, with time-based and counter-based algorithms support, import/export encrypted backups.

What is AndOTP?

andOTP is a free, open-source two-factor authentication application for Android. It enables users to generate one-time passwords for logins to provide an additional layer of account security beyond just a password.

Some of the key features of andOTP include:

  • Support for both time-based algorithms (TOTP) and counter-based algorithms (HOTP)
  • Encrypted backups that allow easy transfer of 2FA credentials between devices
  • Customizable interface with multiple themes
  • Open-source code that provides transparency and security audits
  • Completely offline operation - no connectivity required
  • Easy account import using QR codes
  • Multiple ways to synchronize across devices

With andOTP, users can enable two-factor authentication on accounts like Google, Facebook, GitHub, online banking, and more. It generates the one-time passcode on the user's device rather than relying on an external service. The app is free, has no ads, requires no special permissions, and stores all data locally for maximum privacy and security.

AndOTP Features

Features

  1. Open source and free
  2. Generates time-based and counter-based one-time passwords
  3. Supports common 2FA standards like HOTP, TOTP, and Steam
  4. Encrypted backups can be imported and exported
  5. Customizable interface with themes
  6. Can be locked with a PIN code or fingerprint
  7. Available in multiple languages

Pricing

  • Free
  • Open Source

Pros

Free and no ads

Open source for transparency and community contributions

Wide range of supported 2FA services

Secure encrypted backups

Customizable interface

Available on F-Droid as well as Google Play Store

Cons

Lacks support for some less common 2FA services

No cloud sync or multi-device sync

Setup can be complex for less tech-savvy users


The Best AndOTP Alternatives

Top Security & Privacy and Two-Factor Authentication and other similar apps like AndOTP


Authy icon

Authy

Authy is a two-factor authentication application developed by Twilio that provides enhanced security for logging into online accounts. It works by associating your mobile device with your online accounts so that a second one-time passcode generated by the Authy app is required in addition to your regular account password when...
Authy image
Google Authenticator icon

Google Authenticator

Google Authenticator is a software-based authenticator app developed by Google for multi-factor authentication by generating timed one-time passwords. It can be used to enhance the security of user logins to applications and online accounts by requiring users to provide both their regular account password as well as a 6-digit one-time...
Google Authenticator image
Microsoft Authenticator icon

Microsoft Authenticator

Microsoft Authenticator is a free multi-factor authentication app developed by Microsoft that adds an extra layer of account security for personal and work Microsoft accounts. It works by requiring the user to provide both their account password and a verification code generated by the Authenticator app when signing in, preventing...
Microsoft Authenticator image
WinAuth icon

WinAuth

WinAuth is a lightweight, portable application for Windows that allows users to generate one-time passwords and verification codes for logins that require two-factor authentication. It supports several common standards used for multi-factor auth, including Time-based One-time Password algorithm (TOTP) and HMAC-based One-Time Password algorithm (HOTP).Some of the key features of...
WinAuth image
FreeOTP icon

FreeOTP

FreeOTP is an open source, free two-factor authentication application for Android and iOS devices. It allows users to generate time-based one-time passwords (TOTP) for added login security to websites and other services that support TOTP authentication.Some key features of FreeOTP include:Open source code and free to useSupports secure password generation...
FreeOTP image
YubiKey icon

YubiKey

YubiKey is a hardware authentication security key manufactured by Yubico. It is a small USB device designed to protect access to computers, networks, and online services by providing strong two-factor and multi-factor authentication.The YubiKey works by generating one-time passwords known as one-time passcodes (OTPs). When the YubiKey button is pressed,...
YubiKey image
2FA Authenticator (2FAS) icon

2FA Authenticator (2FAS)

2FA Authenticator (2FAS) is a free and open-source two-factor authentication mobile app. It allows users to set up two-factor authentication for their online accounts in order to add an extra layer of security beyond just a password.Some key features of 2FA Authenticator include:Support for common 2FA standards like Time-based One-time...
2FA Authenticator (2FAS) image
Duo mobile icon

Duo mobile

Duo Mobile is a popular two-factor authentication application developed by Duo Security that adds an extra layer of protection for online accounts. It works by generating temporary one-time passcodes on the user's smartphone that they must enter in addition to their regular account password when logging in.The app is used...
Duo mobile image
Aegis Authenticator icon

Aegis Authenticator

Aegis Authenticator is a free and open source two-factor authentication app for Android. It provides enhanced security for your online accounts by requiring a second one-time password in addition to your regular login password when accessing important services.Some of the key features of Aegis Authenticator include:Support for common 2FA methods...
Aegis Authenticator image
Krypton icon

Krypton

Krypton is a free, open-source note taking application developed by KryptCo. It is available on Windows, Mac, Linux, iOS and Android.Some key features of Krypton include:Rich text editing - Supports formatting options like bold, italics, highlighting, bullets, code blocks, etc.Tagging - Organize notes using tags and quickly access notes filtered...
Krypton image
OTPClient icon

OTPClient

OTPClient is a free, open source two-factor authentication (2FA) client that runs on Linux, macOS and Windows. It supports the most common types of 2FA including time-based one-time passwords (TOTPs) and HMAC-based one-time passwords (HOTPs).By scanning a QR code from services like GitHub, Google, Facebook etc., OTPClient can generate 6...
OTPClient image
Daito Authenticator icon

Daito Authenticator

Daito Authenticator is a free and open-source two-factor authentication mobile app available for both iOS and Android. It allows users to easily set up two-factor authentication for accounts that support time-based one-time passwords such as GitHub, Google, Dropbox, and more.The app generates secure 6-digit codes that refresh every 30 seconds....
Daito Authenticator image
Raivo Authenticator icon

Raivo Authenticator

Raivo Authenticator is a free and open-source two-factor authentication app available for Android and iOS. It allows users to generate time-based one-time passwords (TOTP) for logins to provide an extra layer of security beyond just a password.Some key features of Raivo Authenticator include:Simple and intuitive interface to easily manage tokens/accounts...
Raivo Authenticator image
Itsme icon

Itsme

itsme is a secure digital identity and authentication app originally developed by Belgian Mobile ID, a consortium of major Belgian banks and telecommunications companies. The app allows users to confirm their identity using their smartphone rather than passwords or physical tokens when accessing online services, signing digital documents, authorizing transactions,...
Itsme image
OnlyKey icon

OnlyKey

OnlyKey is a hardware-based authentication device and password manager created by OnlyKey. It is designed to replace traditional passwords and two-factor authentication methods with more secure cryptographic authentication.Some key features of OnlyKey include:Stores encrypted passwords and generates strong random passwordsSupports FIDO U2F/WebAuthn for passwordless login to websitesGenerates one-time passcodes for...
OnlyKey image
Incognia icon

Incognia

Incognia is a fraud prevention and authentication solution designed specifically for mobile applications and transactions. It uses location data from mobile devices along with advanced behavioral modeling and risk scoring algorithms to determine if a mobile transaction is legitimate or potentially fraudulent.Here are some key features of Incognia:Location verification -...
Incognia image
TOTP Authenticator icon

TOTP Authenticator

TOTP Authenticator is a free and open source application for generating time-based one-time passcodes for two-factor authentication. It is compatible with Google Authenticator and other TOTP-based authenticator apps.This app allows you to add accounts secured by two-factor authentication, such as your Google, Facebook, Twitter, or Microsoft accounts. When logging into...
TOTP Authenticator image
LibreOTP icon

LibreOTP

LibreOTP is a free and open source one-time password authenticator application for Android. It allows users to enable two-factor authentication for logins and other services by generating timed one-time passwords that are valid for a short period.LibreOTP is based on Google Authenticator and implements common OTP standards like HMAC-Based One-Time...
GetOTP icon

GetOTP

GetOTP is a free and open source two-factor authentication app available for Android, iOS, Windows Phone, Blackberry, and Linux platforms. It generates time-based one-time passwords (TOTPs) that are compatible with Google Authenticator or other similar authenticator apps.Some key features of GetOTP include:Open source code and free to useNo account required...
GetOTP image
Authenticator Extension icon

Authenticator Extension

The Authenticator Extension is a free, open source browser extension used for two-factor authentication (2FA) and one-time passwords (OTP). It allows users to manage and generate 2FA/OTP codes for secure logins, without requiring a separate authentication mobile app.The extension supports integration with popular sites and services like Google, Facebook, Github,...
Authenticator Extension image
Hydro Raindrop icon

Hydro Raindrop

Hydro Raindrop is a free desktop app for taking notes, organizing tasks/to-dos, saving web content, and more. It has a clean, minimalist interface that allows you to quickly capture thoughts, ideas, notes, and save webpages/images without clutter or distractions.Some key features of Hydro Raindrop include:Quick Note Taking - Jot down...
Yandex.Key icon

Yandex.Key

Yandex.Key is a cloud-based password manager and encrypted online storage service developed and operated by Yandex, a major Russian technology company. It works across platforms on Windows, macOS, iOS, Android and as a web app.Yandex.Key provides users with a secure digital vault to store sensitive information such as:Passwords for websites...
Yandex.Key image
VoiceProtect icon

VoiceProtect

VoiceProtect is a secure voice communication software designed to protect user privacy. It offers end-to-end encryption for voice calls, video calls, and messaging to prevent third-parties from accessing communication data.Some key features of VoiceProtect include:Encrypted voice and video calls to ensure conversations remain privateEncrypted messaging with self-destructing messagesUser verification system...
Authenticator Plus icon

Authenticator Plus

Authenticator Plus is a popular, highly rated app for two-factor authentication codes. It follows current best practices in security and privacy, storing 2FA secrets encrypted on each device, allowing backups, and syncing across user devices securely.Authenticator Plus provides a simple, intuitive interface to manage two-factor codes for all accounts supporting...
Authenticator Plus image
Open Authenticator icon

Open Authenticator

Open Authenticator is a free, open source two-factor authentication application available for Android and iOS. It allows users to set up two-factor authentication for online accounts by generating time-based one-time passwords compatible with services like Google Authenticator, Authy, and Microsoft Authenticator.The app is designed to provide an easy way for...
Open Authenticator image