About ii5
English Speaking Assessment Platform
A platform that scientifically evaluates and improves
your practical English speaking skills
Why Choose ii5?
ii5 uses a unique assessment system co-developed with linguistics experts to analyze your English speaking ability from multiple angles. It's the world's first comprehensive speaking assessment platformspecialized in improving practical communication skills.
5 Assessment Criteria Developed by Language Experts
Pronunciation Accuracy
Evaluates clear pronunciation that native speakers can understand. Analyzes in detail from individual phonemes to words and sentence level.
Intonation
Assesses whether you can accurately reproduce English-specific intonation and rhythm. Supports the acquisition of natural speaking patterns.
Fluency
Measures the ability to speak at a natural speed without interruption. Directly contributes to improving practical conversation skills.
Vocabulary & Grammar
Evaluates appropriate word choice and accurate grammar usage. Develop expression skills suitable for business situations.
Communication Skills
Comprehensively evaluates effective speaking that gets your message across. Measures practical English proficiency.
Detailed Analysis and Diagnosis with AI Technology
Cutting-edge AI technology analyzes your speech from phoneme level to sentence structure in multiple layers. It specifically identifies areas for improvement and suggests effective learning methods.
Real-time Voice Analysis
Analyzes pronunciation and intonation instantly while you speak, providing immediate feedback
Personalized Learning Suggestions
Identifies your weaknesses and suggests the most effective improvement methods
Detailed Diagnostic Report
Shows specific improvement points for each of the 5 assessment criteria
Progress Visualization
Compare with past results and track your growth with numbers and graphs
Simple 3-Step Process
Free Placement Test
Start with a free placement test to diagnose your optimal level
Take the Main Test
Choose from 5 levels and take a 15-25 minute test
Results & Certificate
Get detailed results instantly. Digital certificate also issued
User Testimonials
"Thanks to ii5, I became aware of my pronunciation habits. I can learn efficiently because I know specific areas to improve.
Sarah Chen (International Business Consultant)
"I've gained confidence in my English presentations for business. The improvement in intonation was particularly significant.
Michael Rodriguez (Tech Startup Founder)