What is DuoHacker?
DuoHacker is a third-party userscript for Duolingo automation and account tools. It is not made by, endorsed by, or affiliated with Duolingo.
Help center
FAQ
Short answers for installation, updates, source code, and account-risk questions.
Where should I install it?
Use the official DuoHacker GreasyFork page. A userscript manager such as Tampermonkey or Violentmonkey is required in your browser.
Is DuoHacker free?
The public userscript is free. Avoid paying random reposts or mirrors that claim to sell the same script.
How do updates work?
GreasyFork publishes the current version and version history. Most userscript managers can check for updates automatically after the script is installed.
Where can I check the source?
The source page on this website indexes the public GitHub repository and the GreasyFork script listing so you can find the main files quickly.
What is the key page for?
The key flow is used by the project for access or verification steps. Use only the official duohacker.io.vn pages to avoid fake copies.
Can using it affect my Duolingo account?
Yes. Any third-party automation can violate another service's rules. Use it only if you understand the risk and accept responsibility for your account.
Where do I report a problem?
Use the public GitHub repository for source-related issues, or the project community links from the main website for support.