EdTech · AI · 2025 · 0→1 launch
Lingua Tutor
An AI English tutor app in the spirit of Loora — conversational practice, pronunciation feedback, and structured lessons on mobile.
Speaking sessions that feel human · Measurable progress
Lingua Tutor
Speaking sessions that feel human · Measurable progress
Challenge
Adult learners wanted spoken English practice without expensive tutors or stiff multiple-choice apps. The product needed natural conversation, clear scoring, and a path that felt academic — not gimmicky.
Approach
- 01Designed lesson paths around real situations: interviews, travel, workplace small talk.
- 02Built an AI conversation coach with turn-taking, gentle corrections, and pronunciation scoring.
- 03Kept a human-in-the-loop review for content quality and safety before lessons went live.
- 04Instrumented streak, speaking minutes, and accuracy so learners see progress weekly.
Stack, with reasons
React Native
One team shipping iOS and Android with shared lesson UI.
Speech + LLM pipeline
Conversation quality depended on low-latency audio and grounded feedback.
Eval harness
We refused to ship tutor replies that failed a curated conversation set.