Duolingo vs Stones2Milestones
Duolingo
Duolingo is the world's most popular way to learn a language
3274 employees · est. 2011 · Pittsburgh, United States
Stones2Milestones
Facilitating language-skill building through more than a decade of pedagogic research
90 employees · est. 2008 · Gurgaon, India
Stones2Milestones is the older company (2011 vs 2008); Duolingo is the larger of the two.
Side-by-Side Comparison
| Metric | Duolingo | Stones2Milestones |
|---|---|---|
| Founded | ||
| Founded | 2011 | 2008 older |
| Headquarters | ||
| Headquarters | Pittsburgh, United States | Gurgaon, India |
| Employees | ||
| Employees | 3274 larger | 90 |
| Industry | ||
| Industry | EdTech, Education, Mobile | EdTech, Education |
| Funding Stage | ||
| Funding Stage | IPO | Seed |
| Total Funding | ||
| Total Funding | $703.30M | $650.00K |
| Funding Rounds | ||
| Funding Rounds | 10 | 2 |
| Services | ||
| Services | language courses, chess courses, Duolingo English Test, Duolingo for Schools, Duolingo for Business, Super Duolingo subscription, Duolingo Max | English learning ecosystem for children, Live online group and 1:1 classes, Educational app for reading and language skills, Standardized reading skill assessment (FAST), Children’s book publishing |
| Target Customers | ||
| Target Customers | individual learners, students, educators, schools, business professionals, language enthusiasts | Children aged 3-12, Schools and educational institutions, Teachers and school leaders, Parents advocating for language learning |
| Taxonomy | ||
| Taxonomy | Language LearningEducation TechnologyFreemium ModelAI In EducationGamified LearningLanguage Certification +9 | Language Skill DevelopmentPedagogic ResearchEducational TechnologyChildhood LiteracyReading Habit CultivationAI-Driven Content Recommendation +9 |
| Website | ||
| Website | duolingo.com | stones2milestones.com |
About Duolingo
Duolingo, founded in 2011, is a standout company in the EdTech and Education sectors, headquartered in the United States. Known for its slogan, "Duolingo is the world's most popular way to learn a language," the company has successfully positioned itself as the most downloaded education app in the h...
About Stones2Milestones
Stones2Milestones, founded in 2008 and headquartered in India, is an innovative player in the EdTech and Education sectors. The company operates under the guiding principle that language is a vital life skill, particularly during formative years. Over a decade of dedicated pedagogic research undersc...
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Compiled from the BounceWatch company index. We last looked at Duolingo on 14 Aug 2026, and Stones2Milestones on 3 Feb 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
