Write English that commands respect
Instant AI corrections tailored for Korean professionals. Fix grammar, improve fluency, and master the polite register that gets you ahead in global business.
Sentences Corrected
Error Categories
Accuracy Rate
Avg. Response Time
Smart Classification
Every error, categorized and explained
Our AI doesn't just fix your English — it identifies exactly what type of error you made so you learn the pattern and never repeat it.
Grammar
Subject-verb agreement, tense, articles, prepositions
Vocabulary
Word choice, false cognates, Korean-English interference
Structure
Word order, sentence construction, clause linking
Fluency
Natural phrasing, idiomatic expressions, redundancy
Politeness
Register, formality level, workplace appropriateness
Platform Features
Everything you need to master business English
From instant corrections to structured courses — a complete learning ecosystem for Korean professionals and their teachers.
Instant AI Corrections
Paste any sentence and get professional business English in seconds. See the original, corrected version, error type, and two alternative phrasings.
Smart Correction Library
Every correction auto-saves to a searchable database with entry numbers, tags, and pattern notes. Build a comprehensive knowledge base effortlessly.
Pattern Detection
When 3+ entries share the same error type, the system flags it as a "Course Pattern" and suggests a lesson topic. Let AI do the analysis.
Progress Dashboard
Track total corrections, error breakdowns, improvement trends, and recurring mistakes. See exactly where to focus your learning effort.
Course Framework Builder
Organize entries into 5 professional modules: Introductions, Meetings, Emails, Presentations, and Difficult Conversations.
Session Summaries
Automatic end-of-session reports showing entries added, top error types, new patterns, and data-driven insights for what to teach next.
How It Works
Three steps to professional English
Submit Your Sentence
Paste any English sentence you're unsure about — emails, presentations, meeting scripts, or Slack messages.
Get AI Correction
Receive an instant professional rewrite with error classification, explanation, and two alternative expressions.
Track & Improve
Watch your error patterns decrease over time. Focus on your weakest areas with personalized recommendations.
Built for Both Sides
Teachers teach smarter. Students learn faster.
For Teachers
- Auto-build a correction library from every student interaction
- AI detects recurring patterns and suggests lesson topics
- Organize entries into 5 professional course modules
- Export content for worksheets, courses, and social media
- Session analytics show exactly what to teach next
For Students
- 24/7 access to professional-level English correction
- See your most common errors and where to focus
- Track improvement trends over weeks and months
- Learn through real business scenarios you actually face
- Access structured course modules for accelerated learning
Real Examples
See the transformation
Common mistakes Korean professionals make — and how our AI fixes them instantly.
I will send you the report until tomorrow.
I will send you the report by tomorrow.
Could you please do the needful and revert?
Could you please handle this and let me know?
I am agree with your opinion about this matter.
I agree with your perspective on this matter.
Pricing
Start free. Upgrade when you're ready.
No hidden fees. Cancel anytime. Your learning journey starts today.
Free
Try it out and see the difference
- 5 corrections per day
- All 5 error categories
- Alternative expressions
- Basic correction history
Professional
For serious learners and daily users
- Unlimited corrections
- Full progress dashboard
- Error pattern tracking
- Session summaries
- Priority AI processing
Premium
Complete learning + course access
- Everything in Professional
- Course module access
- Structured lesson plans
- Teacher-built content
- Content export tools
- Priority support
Stop guessing. Start commanding.
Join Korean professionals who are transforming their business English from awkward to authoritative. Your first correction is free.
No credit card required • 5 free corrections daily • Cancel anytime