Add.a.lingua, Llc
Add.a.lingua, LLC operates a subscription-based online professional development platform for dual language immersion (DLI) educators in the US, offering an AI-powered teaching assistant, on-demand pedagogy courses, a published methodology book, and enterprise frameworks for schools and districts.
- Company typePrivate
- Founded-
- HeadquartersHolland, United States
- Headcount1–10
- GTM typeB2B and B2C
- OfferingSoftware
What Add.a.lingua, Llc does
Add.a.lingua, LLC operates a subscription-based online professional development platform built exclusively for dual language immersion (DLI) educators in the United States. The company provides a four-tier offering — Educator Free, Educator Basic ($19.99/month), Educator Basic Plus+ ($99/month), and a quote-based Enterprise tier — combining an educator community, on-demand professional development courses, and 'Addi,' an AI-powered teaching partner trained on DLI pedagogy that generates partner-language lesson content aligned to teacher-specified language targets. The product surface also includes a published book ('Six Practices that Boost Bilingualism & Biliteracy'), a summer book club with author-led webinars, and proprietary Spanish and English Language Frameworks sold to enterprise customers.
The platform is built on the LearnWorlds learning management system, with Stripe handling payments, social login (Google, LinkedIn, Facebook) for authentication, Vimeo for embedded video, and multiple chat support integrations (Intercom, Olark, TawkTo, Freshchat, Zendesk). The content backbone is the founders' documented 'Addalingua Approach' — six foundational practices for protecting partner language — and the 'Addalingua Instructional Cycle' (Introduce, Notice, Practice, Produce), both codified by co-founders Stacey Washburn and Lilah Ambrosi, former DLI teachers and program leaders who founded the company in Holland, Michigan in 2009 after an angel investor approached them to commercialize their expertise.
The business model combines a product-led growth motion for individual educators (freemium entry, self-serve monthly conversion) with a contact-based enterprise sales motion for schools and districts. The US DLI program landscape has expanded from fewer than 300 programs in the early 2000s to over 5,000 today, representing the company's addressable market. Addalingua is privately held by its co-founders, has reported 1–10 employees, and operates with a formalized executive team (CEO Pamela Ratti, CTO Jessica De Molder, CPO Camellia Hill) separate from the founders, who continue to lead instructional content and book authorship.
Add.a.lingua, Llc firmographics
Firmographics- Name
- Add.a.lingua, Llc
- Legal name
- Add.a.lingua, LLC
- Website
- https://www.addalingua.com
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Add.a.lingua, LLC operates a subscription-based online professional development platform for dual language immersion (DLI) educators in the US, offering an AI-powered teaching assistant, on-demand pedagogy courses, a published methodology book, and enterprise frameworks for schools and districts.
- Ownership category
- akta.pro rank
Add.a.lingua, Llc industry classification
Industry- Product category
- Online Educator Professional Development
- NAICS
- Educational Support Services (61171)
- SIC
- Services-Educational Services (8200)
- akta.pro primary industry
- Virtual World Language & Electives Providers (K–12) (EDAJADAK)
Keywords
Where Add.a.lingua, Llc is headquartered
LocationHeadquarters
- HQ city
- Holland
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Add.a.lingua, Llc business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations
Revenue model
- Individual Educator Subscriptions: Monthly subscription revenue from individual DLI educators subscribing to Educator Basic ($19.99/mo) or Educator Basic Plus+ ($99/mo) tiers. Includes access to Addi chatbot, AI courses, and professional development content.
- Enterprise/School District Licensing: Custom enterprise pricing for schools and districts seeking school-wide DLI professional development, frameworks, and tools. Revenue derived from multi-seat or site-wide licenses with contact-based pricing.
- Book Sales: Revenue from sale of the book 'Six Practices that Boost Bilingualism and Biliteracy: The Addalingua Approach to Dual Language Immersion Education' available in digital and paperback formats on Amazon.
- Workshop Services: Full-day workshops delivered by co-authors Stacey Washburn and Lilah Ambrosi to help teams implement the Addalingua approach. Contact-based pricing for on-site professional development.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free entry tier for DLI educators with community access and basic content |
| Subscription | Monthly | AI-powered teacher assistant with chatbot access |
| Subscription | Monthly | Full professional development catalog with all courses and resources |
| Subscription | Monthly | School or district-wide deployment with comprehensive PD and frameworks |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
Add.a.lingua, Llc product offering
Product offeringCore offering
Addalingua provides a subscription-based online platform for dual language immersion (DLI) educators that bundles an AI-powered teaching assistant (Addi), an online educator community, and a library of self-paced professional development courses. It offers freemium and tiered monthly subscriptions (Educator Basic at $19.99/month and Educator Basic plus+ at $99/month) for individual teachers and quote-based enterprise licensing for schools and districts.
Product overview
Addalingua is a professional development and educator resource platform built exclusively for dual language immersion (DLI) teachers, operating as a subscription-based SaaS with a four-tier model (Educator Free, Educator Basic, Educator Basic plus+, and Enterprise). The platform's core offering centers on a community-embedded professional development model combining live collaboration, on-demand courses, and an AI-powered teaching tool called Addi. The Educator Free tier provides community access and two free mini-courses; Educator Basic ($19.99/month) adds the Addi AI chatbot and an AI for Language Teachers course; Educator Basic plus+ ($99/month) unlocks the full PD course library (hours of courses on DLI pedagogy); and Enterprise provides school/district-wide access with Spanish and English Language Frameworks. The platform also publishes the book 'Six Practices that Boost Bilingualism & Biliteracy' and hosts a free Summer Book Club. The architecture is built on the LearnWorlds LMS, with Stripe powering payments, social login (Google, LinkedIn, Facebook) for authentication, and Vimeo for embedded video content.
Differentiator
Problem solved
Functional benefit
Brands
- Addi: AI-powered teaching assistant designed specifically for dual language immersion teachers, serving as a personal teacher assistant to help with lesson planning and language instruction.
Products and services
- Addalingua Educator Subscription Platform Subscription-based online platform for individual DLI classroom teachers and paraprofessionals, with a freemium tier (Educator Free) and paid monthly tiers (Educator Basic $19.99/mo, Educator Basic plus+ $99/mo). Includes community access, the Addi AI teaching assistant (Basic and above), and a self-paced catalog of DLI-specific professional development courses (full library at the plus+ tier).
- Addalingua Enterprise Program Quote-based school- and district-wide subscription providing DLI-specific professional development courses, Spanish Language Frameworks, English-Specific Skills Frameworks, Addi AI access, and enterprise-level resources to improve school-wide partner language proficiency outcomes.
- Addi — AI Teaching Partner Proprietary AI chatbot built specifically for DLI educators. Acts as a personal teacher assistant to generate lesson content (paragraphs, short stories, poems) connected to specified language targets, evaluate student language output, and integrate AI into weekly planning workflows.
- Six Practices that Boost Bilingualism & Biliteracy: The Addalingua Approach to Dual Language Immersion Education Published book co-authored by Stacey Washburn and Lilah Ambrosi presenting the Addalingua Approach — six foundational practices for increasing partner language proficiency and bilingual outcomes in DLI programs. Sold in paperback and ebook formats via Amazon.
- Addalingua Summer Book Club Free summer professional learning program organized around the founders' book, featuring monthly live webinar discussions with authors Stacey Washburn and Lilah Ambrosi, chapter-by-chapter discussion questions, and implementation action steps.
- Addalingua On-Site Workshops Full-day, on-site workshops delivered by co-founders Stacey Washburn and Lilah Ambrosi to help school and district teams implement the Addalingua Approach and instructional frameworks. Contact-based pricing.
Quantifiable outcome
- Over 5,000 DLI programs in the US represent the total addressable market for Addalingua's solutions.
- +2 more outcomes
Companies that use Add.a.lingua, Llc
Customer profileNamed customers2 records
Segments4 records
Ideal customer profiles2 records
Add.a.lingua, Llc technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability3 records
Feature3 records
Add.a.lingua, Llc partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights6 records
Add.a.lingua, Llc competitors and assessment
Company assessmentDirect peers
- Imagine Learning: Provides K–12 world-language and literacy programs (including Spanish) for schools and districts. Closely comparable to Addalingua in serving DLI/world-language teachers with digital curriculum and PD resources.
- LanguageBird: Online world-language classes and teacher support for K–12 schools, including Spanish immersion programs. Comparable to Addalingua's combination of language instruction tools and educator-facing services for DLI environments.
- Languagenut: Language-learning platform built specifically for K–12 schools, offering structured curriculum and teacher dashboards. Comparable to Addalingua as a school-oriented world-language digital learning solution with teacher tools.
- Middlebury Interactive Languages: K–12 world-language curriculum built on Middlebury's immersion pedagogy. Comparable to Addalingua in delivering language-acquisition content and educator resources aligned to immersion and partner-language instruction.
Broad incumbents
- Santillana USA: Major Spanish-language educational publisher serving K–12 schools across the Americas. Comparable to Addalingua as a Spanish-language content provider, though broader and not DLI-specific.
- Outschool: Marketplace for small-group online classes, including world languages, with strong teacher and parent audiences. Comparable to Addalingua in providing online educator-led learning experiences to families and educators.
- Khan Academy (Khanmigo): Large free K–12 learning platform with Khanmigo, an AI tutor/assistant for teachers and students. Comparable to Addalingua in offering AI-augmented teacher productivity, though at much broader scale and across all subjects.
- Duolingo: Consumer and school-focused language-learning platform. Comparable to Addalingua in the language-acquisition space, though focused on learner-facing experiences rather than teacher PD.
- Varsity Tutors: Online tutoring and PD platform serving schools, districts, and families. Comparable to Addalingua in providing online language and instructional support to K–12 educators and learners.
Emerging players
- MagicSchool AI: AI-powered tools for K–12 teachers (lesson planning, differentiation, IEP support). Comparable to Addalingua's Addi as a teacher-facing AI assistant, though broader and not DLI-specific.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Add.a.lingua, Llc social profiles
Digital presenceAdd.a.lingua, Llc financial estimates
Financial estimateRevenue estimate
Valuation estimate
Add.a.lingua, Llc leadership team
Management profileNumber of profiles
Profiles6 records
Add.a.lingua, Llc funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Add.a.lingua, Llc 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 Add.a.lingua, Llc
What does Add.a.lingua, Llc do?
Addalingua provides a subscription-based online platform for dual language immersion (DLI) educators that bundles an AI-powered teaching assistant (Addi), an online educator community, and a library of self-paced professional development courses. It offers freemium and tiered monthly subscriptions (Educator Basic at $19.99/month and Educator Basic plus+ at $99/month) for individual teachers and quote-based enterprise licensing for schools and districts.
Is Add.a.lingua, Llc a public or private company?
Add.a.lingua, Llc is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Add.a.lingua, Llc founded?
Add.a.lingua, Llc was founded in -1. It employs 1 to 10 people.
Where is Add.a.lingua, Llc based?
Add.a.lingua, Llc is headquartered in Holland, United States, in the North America region.
How does Add.a.lingua, Llc make money?
Four revenue lines are on record. Individual Educator Subscriptions are the primary driver. The others are enterprise/School District Licensing, book Sales and workshop Services.
Who are Add.a.lingua, Llc's main competitors?
Direct peers on record are Imagine Learning, LanguageBird, Languagenut and Middlebury Interactive Languages. Broad incumbents are Santillana USA, Outschool, Khan Academy (Khanmigo), Duolingo and Varsity Tutors. MagicSchool AI is listed as an emerging player.
Does Add.a.lingua, Llc have an API?
No public API is recorded for Add.a.lingua, Llc.
What industry is Add.a.lingua, Llc in?
Add.a.lingua, Llc's product category is Online Educator Professional Development. Its primary akta.pro industry code is EDAJADAK, Virtual World Language & Electives Providers (K–12). Its NAICS code is 61171 and its SIC code is 8200.