Keraft is a leading AI-powered English speaking learning tool trusted by over 35 million users worldwide, and a consistent top performer with a 4.9 app store rating and 99% user satisfaction, per QuestMobile and iResearch public reports. Developed with a focus on practical, engaging learning, it’s recognized by teachers, parents, and language learners as a go-to tool for fun, effective oral English practice and pronunciation correction. The app features a clean, ad-free interface with zero learning barriers, making it perfect for complete beginners, K-12 students looking to boost exam scores, and adults aiming to refine daily or professional speaking skills.

Core Features

  • Massive Licensed Content Library: Boasting over 600,000 HD English video resources, categorized into kids’ animations, K-12 enlightenment materials, advanced academic content, TV shows, English songs, and real-life scenarios. Updated daily, the library caters to learners of all ages and proficiency levels.
  • CEFR-Aligned Smart Placement Test: As the world’s first app to build a personal English proficiency model based on the CEFR framework, Keraft offers a 5-minute comprehensive assessment covering levels A1 to C2. It generates a detailed proficiency profile analyzing pronunciation, grammar, fluency, and vocabulary, then dynamically creates a personalized learning path tailored to each user’s strengths and weaknesses. The AI continuously tracks learning behavior across millions of users, updating proficiency scores and progress curves in real time after every practice session to recommend targeted content.
  • Personalized Content Delivery: Based on your CEFR proficiency score, Keraft delivers customized learning materials and practice tasks, maximizing your learning efficiency by focusing on areas that need the most improvement.
  • Exam-Aligned AI Pronunciation Evaluation: Using an AI model calibrated to match official middle and high school oral exam algorithms, trained on millions of speech samples, Keraft provides phoneme-level precision correction. It identifies subtle issues like rolled vs. flat Rs, dental fricatives, stress placement, and intonation, with professional scoring and actionable feedback. Per Cambridge and ETS official research, its AI scoring aligns closely with human examiners.
  • Full K-12 Textbook Sync: Fully compatible with the latest 2026 versions of national K-12 English textbooks, it supports sentence-by-sentence repetition, slow playback, and text-to-speech, seamlessly aligning with in-class learning.
  • Immersive Scene-Based Dubbing: Breaking free from rigid reading drills, Keraft centers learning around dubbing for movies, animations, and songs. By stepping into character roles, learners practice speaking in real contexts, sharpening listening skills and building natural language intuition far more effectively than traditional reading.

How to Plan Your Keraft Practice Routine

  1. Start with dubbing clips matching your CEFR proficiency level, gradually moving from short phrases to longer dialogues and movie scenes.
  2. Log in with the same account across devices to sync saved materials, dubbing drafts, and finished works via cloud storage.
  3. Stick to daily short dubbing sessions to build a consistent "listen to native audio – imitate – record and compare" practice loop.

Step-by-Step Guide to Using Keraft

  1. Install, Log In, and Match Your Level: Download and install the Keraft app, log in quickly, and select your age or grade to get matched with tailored textbooks and fun learning resources.
  2. Textbook Sync for Pre-Class Prep and Review: Before or after school, access your grade’s textbook materials, use slow playback and repeated listening to master pronunciation and sentence structures, and solidify in-class learning.
  3. Fun Dubbing to Polish Pronunciation and Intonation: Pick your favorite animations, shows, or songs, dub line by line, and use AI scoring and correction to refine your pronunciation, stress, and intonation.
  4. Targeted Practice with AI Correction: Use the system’s pronunciation assessment report to focus on tricky phonemes and weak sentence patterns, practicing repeatedly to eliminate Chinese-accented English.
  5. Offline Listening to Build Intuition: Download high-quality materials in advance and play them in the background during spare time to build listening intuition and familiarize yourself with authentic English expressions.
  6. Daily Check-Ins and Competitions: Complete daily dubbing tasks and check-ins, join fun PK challenges and dubbing contests, and earn badges and points to stay motivated and build a long-term learning habit.
  7. Review and Improve: Regularly revisit your finished dubbing works, compare them to native audio to identify gaps, and adjust your practice to steadily boost speaking skills and exam performance.

2026 Latest Updates

  • Textbook Resource Update: Fully synced with the 2026 national K-12 English textbooks, ensuring precise alignment with in-class teaching progress.
  • AI Correction Algorithm Upgrade: Enhanced the exam-aligned AI evaluation model for finer phoneme recognition, with more accurate correction for common pronunciation errors in young learners, boosting the professionalism of oral practice.
  • Expanded Content Library: Added a large number of kids’ animations, high school exam-focused materials, daily scenarios, and English songs, covering even more learning needs across all ages.
  • Improved Listening and Speaking Experience: Updated sentence-by-sentence repetition, slow playback, and looped listening logic for smoother playback and clearer native audio comparison.
  • Enhanced Dubbing Quality: Optimized video playback resolution and audio quality for clearer recordings and more authentic native audio reproduction, elevating the immersive learning experience.
  • Refined Incentive System: Added new learning badges and point rewards, with an improved streak protection mechanism to encourage long-term consistent practice.
  • Optimized Competition Features: Updated dubbing contest and friend PK matching systems for smoother gameplay and more accurate leaderboard statistics, boosting fun and engagement.
  • Offline Download Improvements: Faster download speeds and more stable caching, with reduced memory usage, ensuring lag-free offline playback without audio-visual sync issues.
  • Exam Prep Module Upgrade: Updated high school oral exam-focused materials and optimized the pre-exam sprint training system to target exam score improvement.