ND Lingo - Sell Project

Built this for my wife's English tutoring business. 10 paying students use it daily. Then I realized: this is bigger than one tutor with ten students. The Story My wife teaches English in Ukraine. Group classes. Private lessons. Her students needed speaking practice between sessions—but they were too afraid to practice with humans. So I built an AI tutor they could talk to. No judgment. No embarrassment. Just practice. Then I added mistake tracking. Then auto-generated weekly review lessons from those mistakes. Then a teacher dashboard so she could see everything. Then gamification—streaks, badges, stars—because I noticed her students actually came back when there was something to lose. I'm a developer. Not a language school operator. This app could serve hundreds of teachers. Thousands of students. Someone with the right distribution—connections to language schools, online tutoring platforms, education marketplaces—could turn this into something much larger. Why Schools Will Pay For This 🎯 Auto-Generated Weekly Reviews AI catches every mistake. Categorizes it. Every Monday, students get a personalized review lesson built from their own screw-ups. Zero teacher prep. 🧠 See What Students Want to Learn When students create topics or practice specific words, teachers see it. The only app that reveals what students actually want—not just what they did. 🎤 Native Audio—Not Speech-to-Text Gemini Live processes native audio directly. It hears exactly which sounds students mispronounce—not just transcribed words. No speech-to-text → text-to-speech pipeline. Real pronunciation feedback. 🏆 Gamification That Actually Works 27 badges. Streaks. Stars. Weekly challenges. Students practice because they can't break their streak—not because you told them to. The Hard Parts Are Done Voice AI integration with Gemini Live API Real-time mistake tracking via function calling Auto-generated weekly review lessons Teacher dashboard with class analytics Student progress tracking & insights 27-badge gamification system Streak tracking with milestone celebrations Subscription tiers (Starter/Plus/Unlimited) Usage limits and billing management Class codes for group enrollment Private student invite codes CEFR levels A1-C2 with adaptive difficulty PWA that installs on any phone Multi-language support 100+ React components, production quality What's left? Distribution. What You're Getting Proven with 10 paying students — real daily usage, real engagement, proof it works. (Please note customers are not included in the sell. I just ask that my wife can continue using the app for her existing private and group tutoring students.) Complete source code — React 18 + TypeScript frontend, FastAPI backend Firebase infrastructure — Auth, Firestore, Storage, ready to transfer Teacher dashboard — create lessons, manage students, view analytics Student app — voice chat, progress tracking, badges, streaks Subscription system — tiers, usage limits, billing management built in Gamification engine — 27 badges, 5 categories, streak celebrations Documentation — architecture notes, setup guides, environment configs Tech Stack React 18 TypeScript Vite Tailwind CSS Firebase Auth Firestore Firebase Storage FastAPI Python Google Gemini Live API WebSocket PWA Clean architecture. Production-quality code. 100+ components, 21 custom hooks. This isn't a weekend hack—it's months of development work, shipped and working. Revenue Paths B2B to language schools — teacher dashboard is built for this White-label for tutoring companies — multi-tenant architecture ready Direct-to-student subscriptions — tiers already built Corporate English training — companies pay premium for employee development Expand to other languages — Spanish, French, German learners Affiliate/referral program — gamification hooks ready for viral mechanics By The Numbers 10 Paying Students 100+ Components 27 Badges 6 AI Personas 6 CEFR Levels Working Software. Real Users. Ready to Scale. The hard parts are done. It needs someone with distribution to take it further. I just ask that my wife can continue using the app for her existing private and group tutoring students.