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Gathering insights about Duolingo

Duolingo Tech Stack

Duolingo uses 8 technology products and services including Gradle, SAS, Webpack, and more. Explore Duolingo's tech stack below.

  • Gradle
    Build Automation
  • SAS
    Business Intelligence
  • Webpack
    Development
  • Zabbix
    Miscellaneous
  • Google Sheets
    Office Suites
  • GoodTime
    Pre-employment Assessment
  • TypeScript
    Programming Languages
  • Objective-C
    Programming Languages

Media & News

Duolingo's Email Address Formats

Duolingo uses at least 1 format(s):
Duolingo Email FormatsExamplePercentage
First@duolingo.comJohn@duolingo.com
60%
First.Last@duolingo.comJohn.Doe@duolingo.com
17%
FirstL@duolingo.comJohnD@duolingo.com
14%
FLast@duolingo.comJDoe@duolingo.com
9%

Frequently Asked Questions

What is Duolingo's phone number?

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You can contact Duolingo's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Duolingo's stock symbol?

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Duolingo is a publicly traded company; the company's stock symbol is DUOL.

What is Duolingo's official website and social media links?

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Duolingo's official website is duolingo.com and has social profiles on LinkedInCrunchbase.

How much revenue does Duolingo generate?

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As of December 2025, Duolingo's annual revenue is estimated to be $531M.

What is Duolingo's SIC code NAICS code?

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Duolingo's SIC code is 7389 - Business Services, Not Elsewhere Classified NAICS code is 5112 - Software Publishers.

How many employees does Duolingo have currently?

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As of December 2025, Duolingo has approximately 1.8K employees across 6 continents, including North AmericaAsiaEurope. Key team members include Ceo, Co-Founder & Board Member: L. V. A.Cto & Cofounder: S. H.Chief Of Staff To The Ceo: M. B.. Explore Duolingo's employee directory with LeadIQ.

What industry does Duolingo belong to?

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Duolingo operates in the Software Development industry.

What technology does Duolingo use?

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Duolingo's tech stack includes GradleSASWebpackZabbixGoogle SheetsGoodTimeTypeScriptObjective-C.

What is Duolingo's email format?

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Duolingo's email format typically follows the pattern of First@duolingo.com. Find more Duolingo email formats with LeadIQ.

How much funding has Duolingo raised to date?

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As of December 2025, Duolingo has raised $711M in funding. The last funding round occurred on Jul 28, 2021 for $521M.

When was Duolingo founded?

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Duolingo was founded in 2011.

Duolingo

Software DevelopmentPennsylvania, United States1001-5000 Employees

Our mission is to develop the best education in the world and make it universally available. Duolingo is the most downloaded education app in the history of the App Store and in 2019 became the top-grossing education app worldwide. 

We set out to do something altogether different in the learning space. Learning a new language is hard; we believe it should be fun. We use bite-sized lessons that feel like playing a game to keep our learners motivated. Learning a new language can also be expensive, and because we believe it should be free, we made it so. 

Duolingo has been named to: BuiltIn's Best Places to Work (2023), Fast Company Best Workplaces for Innovators (2022), Fast Company 10 Most Innovative Education Company (2022), among others.

Section iconCompany Overview

Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
Stock Symbol
DUOL
NAICS Code
5112 - Software Publishers
Founded
2011
Employees
1001-5000

Section iconFunding & Financials

  • $711M

    Duolingo has raised a total of $711M of funding over 5 rounds. Their latest funding round was raised on Jul 28, 2021 in the amount of $521Mas a IPO.

  • $500M$1B

    Duolingo's revenue is estimated to be in the range of $500M$1B

Section iconFunding & Financials

  • $711M

    Duolingo has raised a total of $711M of funding over 5 rounds. Their latest funding round was raised on Jul 28, 2021 in the amount of $521Mas a IPO.

  • $500M$1B

    Duolingo's revenue is estimated to be in the range of $500M$1B

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