Overview System Requirements Related


2fast (acronym for two factor authenticator supporting TOTP) is a free, open source, two factor authenticator for Windows with the ability to store the sensitive data encrypted at a place of your choice instead of a 3rd party cloud location. Features • Every data is stored in one single encrypted file - Encrypted with AES using a password-based key by PBKDF2 - Possibility to send the data file to your colleges and friends to securely share logins - Easy backup & restore in one single file • Everything works local - No extra account, registration or login needed - No Internet connection needed. However, there is the possibility to add a personal WebDAV server (e.g. ownCloud or Nextcloud) as storage location [currently work in progress] • Free • Open Source • Works on multiple platforms - Currently Windows and Android [work in progress] • Uses the widely accepted TOTP algorithm (RFC 6238) -Works with accounts from Google, Microsoft, Facebook, PayPal, etc. The app logo has been sourced from freepik @flaticon:


Additional information

Published by

Jan Philipp Weber

Developed by

Jan Philipp Weber & Malte Hellmeier

Release date


Approximate size

63.24 MB

Age rating

For ages 3 and over

This app can

File System
Use data stored on an external storage device
Access your home or work networks
Access your Internet connection


Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices.

Language supported

English (United States)
Deutsch (Deutschland)