MicroEnglish

Overview

MicroEnglish is CDIAM's own English learning product. Each lesson is a short listening exercise: learners hear natural English in a British, American or Australian voice, type what they catch, and get word-by-word feedback on exactly what they missed. The site publishes at least nine new lessons every day.

Challenge

Most learners can read far more English than they can understand by ear. Long courses and hour-long lessons do not fit into a working day, and generic quizzes rarely show a learner which sounds they keep missing. The challenge was to make listening practice short, specific and honest about mistakes, and to produce enough good lessons every day to keep it fresh.

Solution

We built a focused practice platform and the content pipeline behind it. Every lesson centres on one phrase, word or grammar point, with dictation clips in three accents, reading, writing and speaking practice, and a test. An automated pipeline drafts each lesson, checks its teaching structure and copy, records the audio and verifies every clip by transcribing it back against the script, then publishes it. Lines that only a human ear can judge go to a person in the admin panel.

Key Features

• Dictation with word-by-word feedback, hints and replay at three speeds
• British, American and Australian voices in every lesson
• A writing coach that tracks the mistakes a learner repeats and explains how to fix them
• An AI tutor for questions and role-play conversations
• Reading practice: articles about countries, places and ideas
• Listening, reading, writing and speaking skills in one lesson, plus level tests
• Six interface languages: English, Arabic, Spanish, Japanese, Korean and Portuguese
• Memberships by card (Stripe) or USDT stablecoin

Technical Highlights

• Laravel 11 and PHP with PostgreSQL and Redis
• Alpine.js, Tailwind CSS and Vite on the front end
• Automated lesson pipeline with AI drafting, contract checks and self-healing retries
• Speech synthesis through a shared speech hub, with every clip transcribed back and compared with its script
• Lesson videos rendered with Remotion
• Browser-tested releases with Playwright

Results

MicroEnglish has published more than 450 lessons since launch, adds new ones every day, and gives learners a complete, checked lesson in about ten to fifteen minutes.