Ed-Tech · AI Product
Ray English
An AI English coach that talks, corrects your writing, and won't let you forget a word.
- Scope
- Full product — frontend, API, AI tutor
- Timeline
- Live, ongoing
- Stack
- React · Node/Express · MongoDB · Railway
- Role
- Ed-Tech · AI Product
The brief
Real product — a conversational English-learning app for adult learners chasing fluency, not an exam date.
My role
Full build: the AI conversation coach, a spaced-repetition vocab engine, in-language writing feedback, and localized VND pricing via VietQR.
The signature detail
Ray quizzes you on a new word again in 2 days, then 5 — spaced repetition built into the chat, not a bolted-on flashcard app.
The result
A live subscription product with a free tier and four paid tiers, running its own AI tutor end to end.
- AI conversation coach
- Spaced-repetition vocab engine
- In-language writing feedback
- Localized VND pricing (VietQR)
Real client / product work — not a concept build. Captures and video are from the live site.
The difference, in one drag
