Is Duolingo Max safe?

Low risk

Duolingo Max modifies Duolingo scripts and profile responses to show paid features and unlimited hearts.

The extension runs on Duolingo pages, blocks selected Duolingo app scripts, fetches the originals, and executes modified versions that mark the account as having Plus, Premium, or Immersive subscription inventory. In alternate patch modes, it intercepts Duolingo user profile API responses in the page and changes fields such as hasPlus, shopItems, and unlimitedHeartsAvailable before the site uses them.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

apersongithubv3.6Firefox Add-ons
17Risk
Who publishes it

apersongithub - no other listings under this identity, 1 shared hostname

What this publisher told the store about itself, and the other listings that told it the same thing.

Shared hosts - 1 hostname

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

html-preview.github.io
Also called by 4 other listings, including Duolingo Max

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 3.6. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on d35aaqx5ub95lt.cloudfront.net

    https://d35aaqx5ub95lt.cloudfront.net/*

  • Read and change your data on duolingo.com

    https://*.duolingo.com/*

  • Read and change your data on duolingo.cn

    https://*.duolingo.cn/*

  • Read and change your data on raw.githubusercontent.com

    https://raw.githubusercontent.com/*

  • Store data in your browser

    storage

  • Watch every request your browser makes

    webRequest

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

Updated 30 September 2026amo-2933933