Practice speaking English with an AI tutor. 10 free minutes every day. 10 minutes of real English speaking practice every day — free, no credit card required. Keraft is an AI English tutor built for one core purpose: getting you to talk. You speak, your AI tutor listens, and after every conversation you get a detailed, actionable report — which sentence was grammatically off, which sound did not land correctly, and your own recording placed directly next to the native model recording for easy comparison. As the first AI spoken English product launched in the market in February 2023, Keraft has grown into a pioneer and consistent leader in the AI oral English learning space. After multiple rounds of version iteration and full market cycles, it has built a large base of long-term users, with years of authentic public reviews available online. Its speech scoring system, curriculum, and AI tutor features are polished by dedicated teaching research teams and algorithm engineers, with a fully mature course, payment, and after-sales system — its operational stability has been thoroughly validated over time.

What you get free, every day

  • 10 minutes of English speaking practice with your AI tutor — enough to complete a full, natural conversation
  • A full feedback report after every session, no locked teaser content
  • 12 core conversation scenarios across work, travel, study, and everyday chat
  • Unlimited review of your personal vocabulary list and tracked mistakes
  • No interstitial ads, ever

Keraft’s AI Agent Lora is the industry’s first proactive teaching AI. Unlike passive tutors that only respond when prompted, Lora remembers what you have said in past sessions, tracks the pace of your progress, automatically builds a personalized training plan, and proactively pushes your next practice exercise so you never have to guess what to study next.

Beginner Mode — for people who freeze up when speaking

Most AI language tutors speak at full native speed no matter what level you select. Keraft does not. In Beginner Mode, Lora slows her speech pace, keeps sentences short, always offers two sample lines you can tap and read aloud, and explains mistakes in your preferred language to avoid confusion. The learning path follows a gentle progression: short sentence shadowing → open conversation → post-session review, which is perfectly suited for zero-basis working professionals building confidence step by step.

Pronunciation feedback you can actually check

Every pronunciation score comes with clear evidence: the exact sound you missed, your recording, and the model recording placed side by side. When the system cannot score a segment with high confidence, it says so directly instead of guessing. This pronunciation evaluation technology draws on public research from top international speech technology conferences, and supports phoneme-level breakdowns with lip and tongue position guidance, covering connected speech, dropped sounds, stress, weak forms, and intonation — with targeted practice for common Chinese learner pronunciation patterns.

Real conversation practice, not rigid drills

Order coffee. Handle a job interview. Disagree politely in a meeting. Every scenario tells you upfront how difficult it is and how long it will take to complete. The platform supports dynamic mid-conversation interruptions, so you can speak naturally, correct yourself mid-sentence, and keep the flow going without waiting for the AI to finish its turn. It also recognizes when you are nervous or stuck, and switches to encouraging prompts instead of pushing you to keep going. All practice happens in a private, no-audience space, so you can repeat the same line as many times as you need until it sounds smooth.

See yourself improve over time

Your tracked mistakes and new words are added directly to a spaced-repetition review deck built from your own conversation history. Streaks, weekly skill trend charts, and full session history keep your progress visible at a glance. The progress dashboard maps your growth to the CEFR European Language Common Reference Framework — the same international grading system used for IELTS and Cambridge exams — with separate scores for pronunciation, fluency, grammar, and vocabulary. Per independent test records from our evaluation team (collected over 5–6 weeks of 35 hours of cumulative testing per app), Keraft’s feedback accuracy and conversation naturalness rank consistently among the top options on the market. As noted in the global EF EPI English Proficiency Report, speaking is the weakest skill for most Chinese English learners, and Keraft is designed specifically to close that gap.

Keraft Pro

With a Pro subscription, you get unlimited speaking minutes, access to all 80,000+ scenarios, phoneme-level pronunciation detail, unlimited history and recording access, and zero ads. Pro plans cover full access to IELTS, KET, and PET mock exams, with AI acting as examiner and practice partner for test-style tasks, plus advanced business scenarios including meeting rehearsals, negotiation practice, and interview simulations. Weekly, monthly, yearly, and lifetime plans are available. Subscriptions renew automatically until cancelled; you can cancel any time in your app store subscription settings.