Altalingvo

AI Web App • Independent product

Live: altalingvo.com

What it is

An AI language tutor that takes you past the tourist plateau to B2/C1 — all four skills, mock exams, and your own topics, instead of staying stuck where the beginner apps give up.

How I built it

A multi-tenant Next.js frontend on a FastAPI backend, with Supabase auth. The learning core is LLM-driven — exercise generation, correction, placement testing — with ElevenLabs text-to-speech for listening and audio-multimodal grading for speaking.

Highlights

• All four skills (reading, listening, writing, speaking), not just vocabulary drills
• Mock exams that estimate your real level
• Bring-your-own-topic lessons

Stack

Next.js · FastAPI · Supabase · OpenRouter · ElevenLabs