Vocabulary
Vocabulary.com is an adaptive vocabulary learning platform serving 3.8M students across 56,000 schools in 122 countries through its proprietary teaching algorithm, gamified Vocabulary Bowl competition, and test prep modules; it operates as a division of IXL Learning following a 2020 acquisition.
- Company typePrivate
- Founded2008
- HeadquartersNew York, United States
- Headcount11–50
- GTM typeB2B and B2C
- OfferingSoftware
What Vocabulary does
Vocabulary.com is an adaptive vocabulary learning platform that combines a dictionary-for-learning with the proprietary VocabTrainer™ teaching algorithm and the gamified Vocabulary Bowl competition to serve students, teachers, and schools. Founded in 2008 by a multidisciplinary team of educators, lexicographers, data scientists, and developers, the platform personalizes vocabulary instruction based on individual learner responses and trouble words, drawing on a content library of 17,000+ teachable words sourced from real-world texts. It serves approximately 3.8 million students across 56,000 schools in 122 countries, and additional modules extend the platform into test preparation (SAT/PSAT, ACT, GRE, TOEFL), collaborative Vocab Jam activities, and the InstaList text-to-vocabulary tool.
The company operates a freemium model with three monetization layers: free basic accounts for individual learners and teachers, recurring premium Learner Subscriptions, and quote-based annual School/District site Licenses that include administrative dashboards, student progress tracking, and automatic Vocabulary Bowl enrollment. A professional development webinar program supports institutional onboarding. Distribution is hybrid — self-serve web and mobile for consumers, direct sales for institutional buyers, and cross-promotional channels via parent company IXL Learning. In 2020, Vocabulary.com was acquired by IXL Learning and now operates as a division headquartered in San Mateo, California, with FERPA, COPPA, and PCI-DSS compliance supporting K-12 institutional sales.
As a privately held subsidiary of IXL Learning, Vocabulary.com has no public revenue disclosure. Strategic direction is increasingly shaped by parent-company ecosystem integration (Vocabulary Bowl enrollment through IXL ELA licenses, cross-promotion with Rosetta Stone, Education.com, ABCya, Emmersion, and other IXL brands) and incremental product expansion into test prep and educator analytics. Awards (2024 Tech Edvocate finalist, Tech and Learning, The Journal Product of the Year, Readers' Choice Honorable Mention) and 5.1 billion+ questions served since founding underscore platform maturity, while continued bi-annual Bowl participation signals durable engagement rather than aggressive new-market expansion.
Vocabulary firmographics
Firmographics- Name
- Vocabulary
- Legal name
- Vocabulary.com, Inc.
- Website
- https://vocabulary.com
- Company type
- Private
- Founded year
- 2008
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Vocabulary.com is an adaptive vocabulary learning platform serving 3.8M students across 56,000 schools in 122 countries through its proprietary teaching algorithm, gamified Vocabulary Bowl competition, and test prep modules; it operates as a division of IXL Learning following a 2020 acquisition.
- Ownership category
- akta.pro rank
Vocabulary industry classification
Industry- Product category
- Educational Software
- NAICS
- Software Publishers (5132), Exam Preparation and Tutoring (611691), Language Schools (61163)
- SIC
- Services-Prepackaged Software (7372), Services-Educational Services (8200)
- akta.pro primary industry
- Adaptive Learning & Personalized Instruction Software (EDAJAMAE)
- akta.pro secondary industries
- Adaptive/Personalized Curriculum & Intelligent Courseware (EDAFACAE), Online Language Learning Platforms (Self-Paced) (EDAMAFAC), Spelling, Vocabulary & Word Study Programs (EDAMAJAD), Adaptive/Personalized Digital Learning Content (EDAGAEAH)
Keywords
Where Vocabulary is headquartered
LocationHeadquarters
- HQ city
- New York
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Vocabulary business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations
Revenue model
- Learner Subscriptions: Individual learners can subscribe to premium plans for enhanced features, personalized learning reports, and ad-free experience. Free basic accounts available for initial engagement.
- School/District Licenses: Classroom and site licenses for schools and districts with premium features, priority support, admin dashboards, and student progress tracking. Schools with active licenses automatically enter Vocabulary Bowl competition.
- Professional Development: Webinars and training sessions for educators to maximize platform usage in classrooms, supporting implementation and adoption.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free Basic Account |
| Subscription | Monthly | Learner Premium Subscription |
| Subscription | Annual | Classroom/School Site License |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels7 records
Vocabulary product offering
Product offeringCore offering
Vocabulary.com operates an adaptive vocabulary learning platform that combines a learner-focused dictionary with a proprietary adaptive teaching algorithm (VocabTrainer™) and gamified academic competition (Vocabulary Bowl). The platform serves individual learners via freemium subscriptions and schools/districts via classroom and site licenses, supporting test preparation for SAT/PSAT, ACT, GRE, and TOEFL. The system personalizes instruction based on individual learner responses and trouble-word patterns using a content library of 17,000+ words.
Product overview
Vocabulary.com is an adaptive vocabulary learning platform structured as a unified product with integrated modules. The core platform combines a dictionary-for-learning with the VocabTrainer™ adaptive teaching algorithm and the Vocabulary Bowl gamified competition. Additional modules include InstaList (vocabulary list creation from any text), Test Prep programs (SAT/PSAT, ACT, GRE, TOEFL), and Vocab Jam collaborative activities. The platform is available through individual Learner Subscriptions and Educator/School Accounts with classroom or site licenses. Content is delivered via the website, mobile applications, and includes ready-made Vocabulary Lists for books and topics. In 2020, Vocabulary.com was acquired by IXL Learning, joining their suite of K-12 education technology products.
Differentiator
Problem solved
Functional benefit
Products and services
- Vocabulary.com Platform An adaptive vocabulary learning platform that combines a dictionary for learning with gamified activities and competitions. Features an advanced teaching algorithm that personalizes word instruction based on individual learner responses.
- VocabTrainer™ The adaptive learning engine underlying the Vocabulary.com platform that delivers personalized vocabulary instruction, selecting the right question at the right time to improve learner vocabulary.
- Vocabulary Bowl
Quantifiable outcome
- 5.34 million words mastered during Spring 2026 Vocabulary Bowl by 1.2 million learners across 122 countries
- +3 more outcomes
Companies that use Vocabulary
Customer profileNamed customers8 records
Segments3 records
Ideal customer profiles3 records
Vocabulary technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Vocabulary partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core, flagship and minor.
- Content PublisherscoreContent publisher partnerships for vocabulary instruction. Publishers provide texts that students are likely to encounter in the real world, which Vocabulary.com uses to create contextually relevant vocabulary questions. Publishers can apply to become featured corpus providers.
- IXL Learning (Parent Company)flagshipVocabulary.com is a subsidiary of IXL Learning, a comprehensive K-12 personalized learning platform. IXL provides enterprise sales infrastructure, brand resources, and platform integration for Vocabulary Bowl competition enrollment.
- IXL Learning Family of ProductsminorCross-promotional relationships with sister products including Rosetta Stone, Wyzant, Education.com, TeachersPayTeachers, ABCya, SpanishDictionary.com, Ingl%C3%A9s.com, Emmersion, and FrenchDictionary.com, positioned together in the IXL Learning education technology ecosystem.
Scale indicators7 records
Recent moves5 records
Expansion highlights6 records
Vocabulary competitors and assessment
Company assessmentEmerging players
- Newsela: Newsela is an emerging player in literacy instruction offering leveled texts with embedded vocabulary and assessment. It is comparable because it sells to K-12 schools and districts, integrates vocabulary into broader reading instruction, and competes for the same ELA supplemental budget.
- Memrise: Memrise is an emerging player in vocabulary and language learning using spaced repetition and video clips of native speakers. It targets a similar learner persona to Vocabulary.com, with comparable freemium subscription monetization and adaptive practice mechanics.
- Freerice: Freerice is a free vocabulary game by the World Food Programme that donates rice for each correct answer. It competes with Vocabulary.com as a free gamified vocabulary alternative for schools and casual learners, though with limited assessment depth.
- Anki: Anki is a free, open-source spaced repetition flashcard platform widely used for vocabulary study. It competes with Vocabulary.com on the consumer side as a free alternative for self-directed learners and test prep, particularly cost-sensitive students.
Broad incumbents
- IXL Learning: IXL Learning is the parent company of Vocabulary.com and a broad incumbent in K-12 personalized learning, covering math, ELA, science, and social studies. It is comparable because Vocabulary.com operates as the vocabulary specialization within IXL's broader platform, with shared enterprise sales and ELA integrations.
- Rosetta Stone: Rosetta Stone is a sister company within IXL Learning focused on immersive language learning across 25 languages. It is comparable as a peer within the same IXL portfolio addressing adjacent vocabulary and language learning use cases for consumers and schools.
- Duolingo: Duolingo is a broad incumbent in language learning with gamified, adaptive vocabulary instruction as a core component. It is comparable because it shares Vocabulary.com's adaptive, gamified approach to vocabulary acquisition, though it spans multiple languages rather than English-only.
- Khan Academy: Khan Academy is a broad incumbent in free K-12 education, including vocabulary practice within its ELA and SAT prep offerings. It competes with Vocabulary.com for school and district adoption, especially on price-sensitive budgets where free tools dominate.
Direct peers
- Lexia Learning: Lexia Learning is a direct peer in K-12 literacy instruction, including explicit vocabulary acquisition as a core component of its reading programs. Both companies compete for district ELA budget allocations and emphasize adaptive, personalized instruction.
- Quizlet: Quizlet is a direct peer offering user-generated flashcards, study games, and adaptive practice tools for vocabulary and other subjects. Both Vocabulary.com and Quizlet target students preparing for standardized tests with gamified, repeatable practice, monetizing via freemium subscriptions.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks4 records
Key highlights7 records
Customer concentration
Vocabulary social profiles
Digital presenceVocabulary compliance and trust
Trust signalCompliance3 records
Vocabulary financial estimates
Financial estimateRevenue estimate
Valuation estimate
Vocabulary leadership team
Management profileNumber of profiles
Profiles1 record
Vocabulary funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Vocabulary M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Vocabulary
What does Vocabulary do?
Vocabulary.com operates an adaptive vocabulary learning platform that combines a learner-focused dictionary with a proprietary adaptive teaching algorithm (VocabTrainer™) and gamified academic competition (Vocabulary Bowl). The platform serves individual learners via freemium subscriptions and schools/districts via classroom and site licenses, supporting test preparation for SAT/PSAT, ACT, GRE, and TOEFL. The system personalizes instruction based on individual learner responses and trouble-word patterns using a content library of 17,000+ words.
Is Vocabulary a public or private company?
Vocabulary is a private company. It is classified as corporate owned and is currently operating.
When was Vocabulary founded?
Vocabulary was founded in 2008. It employs 11 to 50 people.
Where is Vocabulary based?
Vocabulary is headquartered in New York, United States, in the North America region.
How does Vocabulary make money?
Three revenue lines are on record. Learner Subscriptions are the primary driver. The others are school/District Licenses and professional Development.
Who are Vocabulary's main competitors?
Emerging players on record are Newsela, Memrise, Freerice and Anki. Broad incumbents are IXL Learning, Rosetta Stone, Duolingo and Khan Academy. Direct peers are Lexia Learning and Quizlet.
Does Vocabulary have an API?
No public API is recorded for Vocabulary.
What industry is Vocabulary in?
Vocabulary's product category is Educational Software. Its primary akta.pro industry code is EDAJAMAE, Adaptive Learning & Personalized Instruction Software, with a secondary code of EDAFACAE, Adaptive/Personalized Curriculum & Intelligent Courseware. Its NAICS code is 5132 and its SIC code is 7372.