Grammar Precision diagnosis for your
AI scans 13 grammar areas continuously as you answer simple O/X questions, growing your English grammar skills
From tenses to idioms, analyze your grammar skills in 360 degrees
Tenses? Articles? Prepositions? Clear data instead of vague anxiety
See accuracy by 13 categories at a glance
With one click, focus on weak areas
Articles 45% • Conditionals 40% • Idioms 50%
Weak areas are clearly visible
Keep at it and the graph will prove it. Track growth with data, not feelings.
7 / 30 / 90 by period
improvement trend visually
your consistency
3개월 ago Articles 45%→Current 78%
Your effort shows in numbers
Good at tenses but struggling with articles?
AI finds the optimal difficulty level for each grammar category.
Analyzes accuracy across 13 grammar areas for tailored difficulty
Accuracy 80%+
Accuracy 50-80%
Accuracy under 50%
The right level of challengecreates the best learning outcomes
Not just fixed intervals. AI analyzes your memory patterns and creates a personalized review schedule just for you.
Adjusted based on your success rate
AI reads your confidence from response time
Misconceptions are flagged for immediate review
Track your growth rate over 7 and 30 days
One mistake doesn't reset everything
Learning that adapts to you — your personal AI tutor.
GitHub-style activity calendar shows your 90-day learning history. Build streaks and stay motivated.
Track your streak and build the habit of daily learning
Spot patterns in your learning — find your most productive days
Stay motivated by seeing your progress visualized over time
Learning is a marathon, not a sprint
Small daily efforts compound into big results
Built-in grammar explanations, examples, and memory tips. Understand the "why" behind each rule.
Present Perfect
have/has + past participle
I have lived here for 5 years.
I live here for 5 years.
Clear explanations for each grammar rule with practical examples
Correct vs incorrect side-by-side comparisons to see the difference
Memory tips that make rules stick in your mind
13 grammar categories × various topics and exam types
13 areas of detailed analysis
Basics → Structure → Advanced → Expression progression
Real-life customized sentences
Major English tests worldwide
Data will pinpoint your weak spots precisely.
Start for free.