LanguageBuddy
An AI-powered language learning application that provides conversational practice with real-time grammar and vocabulary corrections. Built to make language learning more accessible and engaging through natural conversation with an intelligent chatbot.
The Problem
Traditional language learning apps focus on vocabulary drills and grammar exercises. They lack realistic conversational practice, which is the most critical skill for fluency. Finding a practice partner is often difficult and scheduling-dependent.
The Solution
LanguageBuddy provides an always-available AI conversation partner that adapts to your level. It corrects grammar in real-time, suggests vocabulary, and gradually increases difficulty as you improve — all through natural conversation rather than drills.
Key Features
Adaptive Difficulty
The AI automatically adjusts conversation complexity based on your demonstrated skill level, ensuring optimal learning progression.
Multi-Language Support
Practice in multiple European languages including Dutch, Italian, German, French, and Spanish with native-quality conversation.
Real-Time Corrections
Grammar and vocabulary errors are gently corrected inline during conversation, with explanations of the rules behind each correction.
Progress Tracking
Track your improvement over time with vocabulary growth metrics, grammar accuracy trends, and conversation fluency scores.
Technical Architecture
Frontend
React-based chat interface with real-time message streaming, inline correction highlighting, and a responsive design that works across desktop and mobile. Uses WebSocket connections for low-latency conversation flow.
Backend
Python FastAPI server handling conversation state management, user progress tracking, and AI model orchestration. Integrates with OpenAI's GPT models with custom system prompts tailored for language instruction.
AI Layer
Custom prompt engineering for language teaching, including structured correction output, difficulty assessment, and conversation topic management. Uses few-shot learning for consistent grammar explanation formatting.
Outcomes
5+
Languages Supported
Real-time
Corrections
Adaptive
Difficulty System
WebSocket
Streaming Chat