Who is Duolingo Fast Mode for?

Duolingo Fast Mode is a consumer product built for duolingo learners using Firefox.

Is Duolingo Fast Mode free?

Yes — Duolingo Fast Mode is free to use.

What platforms does Duolingo Fast Mode run on?

Duolingo Fast Mode runs on the web and embeddable surfaces.

Is Duolingo Fast Mode still maintained?

Unverified. Duolingo Fast Mode has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

Who makes Duolingo Fast Mode?

Duolingo Fast Mode is developed by Freinorg.

When did Duolingo Fast Mode launch?

Duolingo Fast Mode first shipped in 2025.

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Duolingo Fast Mode

Name: Duolingo Fast Mode
Author: Freinorg

mozilla.orgOther learning

Duolingo Fast Mode is a Firefox extension for Duolingo learners. It provides immediate correctness feedback, button or hotkey-based autocomplete, safe-to-check indicators, and support for non-speaking challenges.

FreeWebEmbeddable

Visit mozilla.org

Overview

5 features

Duolingo Fast Mode sits in PulseGate's Other learning category. It focuses on speeding up Duolingo lessons and reducing the time and effort needed to complete practice tasks. It is built as a consumer product for duolingo learners using Firefox. It is available for free. It runs on the web and embeddable surfaces.

It is developed by Freinorg, and it first shipped in 2025. Key capabilities include correctness feedback, button autocomplete, and hotkey autocomplete. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Correctness feedback
Button autocomplete
Hotkey autocomplete
Safe-to-check indicator
Non-speaking challenges

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed13 Sep · 07:19 UTC
Duolingo Fast Mode verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Duolingo Fast Mode

What does Duolingo Fast Mode do?: Duolingo Fast Mode focuses on speeding up Duolingo lessons and reducing the time and effort needed to complete practice tasks. It is catalogued under Other learning on PulseGate.
Who is Duolingo Fast Mode for?: Duolingo Fast Mode is a consumer product built for duolingo learners using Firefox.
Is Duolingo Fast Mode free?: Yes — Duolingo Fast Mode is free to use.
What platforms does Duolingo Fast Mode run on?: Duolingo Fast Mode runs on the web and embeddable surfaces.
Is Duolingo Fast Mode still maintained?: Unverified. Duolingo Fast Mode has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who makes Duolingo Fast Mode?: Duolingo Fast Mode is developed by Freinorg.
When did Duolingo Fast Mode launch?: Duolingo Fast Mode first shipped in 2025.
What languages does Duolingo Fast Mode support?: The interface is available in 32 languages, including Czech, German, and Greek.

At a glance

Pricing: Free
Platforms: Web
Built for: Duolingo learners using Firefox
Model: B2C
Solves: Speeding up Duolingo lessons and reducing the time and effort needed to complete practice tasks.

Registered as

Firefox Add-ons: duolingo-fast-mode

Developer

Freinorg

Index record

Indexed: 13 Sep 2026
Lifecycle: Alive
Last seen: 13 Sep 2026

Identity audit (13)

Slug: duolingo-fast-mode-mozilla-org
Lifecycle state recorded: 13 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 13 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 13 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/duolingo-fast-mode

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