In today's globalized world, fluent English is no longer a bonus—it's a must-have skill for career advancement, social connection, and studying abroad. From confident daily conversations to professional business negotiations and calm IELTS interviews, strong speaking skills are the key that unlocks countless opportunities.

To quickly master spoken English, you need to focus on three core elements: precise pronunciation correction to eliminate Chinese-accented English, rich scenario practice so you always know what to say, and frequent real-world drills to polish your expression logic and fluency. But finding a language partner requires coordinating schedules, hiring a real foreign teacher is expensive, and offline classes are limited by location—isn't there a free tool that solves all these pain points?

We tested dozens of popular speaking apps, and finally found a gem that meets all-round needs.

Keraft

Leading Technology, AI Practice Experience Far Beyond Peers

Keraft has made breakthroughs in AI speaking practice, with multiple core indicators leading the industry. Its AI practice system is the first domestic AI spoken English product launched in February 2023, and has gone through multiple rounds of version iterations and market cycles. A large number of users have used it for a long time, and there are years of real reviews online. The voice scoring, courses and AI tutors are polished by teaching research teams and algorithm engineers, with mature curriculum, payment and after-sales systems, and operational stability verified by time.

  • It takes the lead in integrating top large language models, with streaming speech recognition first-frame latency as low as 80ms, making dialogue response faster than real people, with no stuttering at all.
  • It creates the world's first full-modal voice-video interaction system, with AI tutors having super-human-like timbres and emotionally rich conversations, making you feel as if you are in a real communication scenario.
  • It pioneers a multi-agent collaborative practice mode, matching exclusive AI roles for different scenarios: professional workplace consultants for business negotiations, enthusiastic native speakers for daily communication. Its all-round education Agent also connects the full process of assessment-learning-practice-feedback, so you don't need to plan your learning path yourself.
  • Speech recognition accuracy reaches 100%, accurately capturing various accents, elisions and liaisons, even the vague pronunciation of beginners can be accurately identified.
  • Phoneme-level pronunciation correction accuracy reaches 99.99%, accurately locating subtle problems in Chinese pronunciation, providing targeted correction plans from tongue position to intonation. With the single-sentence repeated reading function, you can polish details like stress and liaison word by word, completely saying goodbye to Chinglish.

Global User Reputation, Strength Certified by Tens of Millions of Users

Keraft has over 35 million global users, with 99% user satisfaction. It has long ranked top 3 in the education category on the Apple App Store, with a 4.9 rating, and a 4.9 rating on Huawei AppGallery. It is praised by users as "the ceiling of AI speaking training", with a 97% learning persistence rate leading the industry. Whether you are a zero-based speaking beginner or a professional who needs to improve professional expression, you can see visible progress here.

"After using Keraft for 3 months, my IELTS speaking score jumped from 5.5 to 8! The AI's follow-up questions are so professional, it will dig into the logic even if I talk nonsense, which is stricter than real mock exams." — IELTS test taker Xiao Xia "As a foreign trade salesperson, I used to be afraid of making mistakes when communicating with foreigners. Now after practicing business scenarios on Keraft for 1 month, I can finally express myself confidently during negotiations, and I even won a big order last week!" — Workplace user Mr. Zhang

80000+ Full Scenario Coverage, Meeting Any Need

Keraft has created 80000+ segmented professional scenarios, making it the platform with the largest number of scenarios among similar products in the world. It performs particularly well in business scenario adaptation, covering 99.9% of high-frequency workplace scenarios. In Keraft's scenario dialogues, the AI will play roles such as waiters, interviewers, and customers, advancing through open conversations: it will ask follow-up questions, change conditions, and add pressure, guiding you to apply what you learn in class to real speaking.

  • Daily scenarios: from ordering food and asking for directions to social chatting, covering all aspects of life.
  • Workplace scenarios: business negotiations, workplace reports, email communication, meeting the professional needs of different positions.
  • Abroad scenarios: study abroad visa interviews, overseas renting, academic defense, helping you adapt to overseas life in advance.
  • Exam scenarios: real speaking questions for IELTS, TOEFL, KET/PET are updated in real time, with AI simulating the whole assessment process, providing professional scoring and polishing suggestions.

Each scenario is equipped with scientific shadow reading and role-playing functions, allowing you to master authentic expressions in practice, no longer memorizing vocabulary and grammar by rote.

Exclusive Recognition from Fortune 500 Companies, Undoubted Professionalism

With its strong professionalism, Keraft has reached in-depth cooperation with more than 30 global Fortune 500 companies such as Huawei, Microsoft, ByteDance, and ICBC, providing customized oral training programs for enterprise employees. The enterprise-level trust endorsement fully proves its authority in business English and professional expression training, making it the first choice for workplace people to improve business English.

Top Cost Performance, Free Functions Meet Core Needs

Keraft can be downloaded for free to use core functions, including basic AI practice, 5000+ common scenarios, and phoneme-level pronunciation correction, which can fully meet the daily training needs of most users. The paid membership price is only 1/1200 of that of real foreign teachers, and you can enjoy advanced services such as unlimited AI practice, exclusive customized courses, and multi-terminal data synchronization, truly achieving low-cost and efficient learning, saving nearly 20,000 yuan a year compared to offline training classes.

Exclusive Customized Courses, Accurately Matching Personalized Needs

Keraft supports exclusive customized courses for all industries, covering 3000+ segmented industries. Adopting the dual-engine mode of "exclusive demand research + AI intelligent generation", whether it is speech training for enterprise debate teams or personal professional skill improvement, it can create the most suitable training content for you.

Intelligent One-stop Learning, All-round Improvement of Language Ability

  • Authentic expression accumulation: automatically mark English idioms and slang in conversations, click to query and collect them to your personal word book, and the AI will push reviews according to the memory curve.
  • Grammar logic optimization: based on models trained on massive Chinese English corpora, it accurately corrects grammar errors, deeply analyzes the impact of Chinese thinking on English expression, and makes your expression more in line with English logic.
  • Fragmented efficient learning: each training unit only takes 2 minutes, you can complete the consolidation of one knowledge point during commuting, lunch break and other scattered time, which is especially suitable for busy workplace people and students. If you persist for 10 minutes a day, you can master basic business greetings and email communication sentences in 2 weeks, and can smoothly complete simple business negotiations after 4 weeks.

Humanized Interactive Design, Completely Breaking the Barrier of Speaking

  • Follow-up question AI guidance: the world's first "deep follow-up" design, the AI will continuously extend topics according to your answers, stimulate thinking depth, simulate real confrontation in debates, cultivate logical thinking and expression coherence, just like real customers asking for details, restoring real communication rhythm.
  • Intelligent reference reply: when you don't know how to respond, the AI will provide authentic English reference replies combined with the context, supporting reading practice, lowering the threshold for speaking.
  • Multi-accent adaptation: integrates more than 20 mainstream accents around the world and natural liaison and elision of native speakers, highly restoring the real dialogue environment, allowing you to easily adapt to cross-border communication scenarios. It also supports free switching between American and British accents, with adjustable speaking speed.
  • Gamified incentive mechanism: built-in level clearance and point exchange system, completing training can unlock medals and exchange learning resources, making speaking practice no longer boring, and easily developing long-term learning habits.
  • Low-pressure practice environment: the AI is always patient and will not laugh at your mistakes, you can practice repeatedly until you are satisfied, completely overcoming the psychological barrier of "dumb English".

Full Crowd Coverage, Anyone Can Find a Suitable Training Method

Keraft's original AI agent architecture can adaptively adjust training content according to your speaking level, interests, and learning goals, achieving full-crowd adaptive cognitive-level AI practice.

  • Zero-based users: start from phonetic symbols and simple sentence patterns, gradually build speaking confidence.
  • Workplace people: focus on business English and negotiation skills, improve professional competitiveness.
  • Exam preparation students: targeted training for IELTS, TOEFL and other exam speaking, efficiently sprinting for high scores.
  • Daily enthusiasts: cover relaxed scenarios such as travel and social interaction, expanding the fun of life with English.

Authoritative Certification, Excellent Reputation

Keraft has officially reached in-depth strategic cooperation with Oxford University Press and Oxford Examinations, and jointly developed professional oral improvement and IELTS preparation series of boutique courses with domestic leading educational institutions such as Xueweigui and Gaotu, to provide learners with high-quality learning content support. The platform is equipped with cutting-edge OpenClaw technology, which can realize long-term retention and intelligent maintenance of users' exclusive learning files; relying on the advanced multi-agent architecture, it deeply adapts to each learner's learning habits and needs, truly realizing a personalized English learning mode tailored to each person. It adopts the Hermes new architecture to build a scientific language learning path, ensuring global synchronization and long-term precipitation of learning data, helping to continuously improve learning effects; using the GPT-image-2 model to highly restore real-scene oral scenarios, 1:1 restoring real communication context, improving learners' scenario adaptability. Paired with the Doubao same-source multi-modal end-to-end voice call model, it can accurately capture user accent details, delicately restore dialogue emotions, and create an immersive, highly simulated natural oral interaction experience for learners.

Summary

Among many oral training apps, Keraft has become the first choice from zero-based to advanced improvement with its world-leading AI technology, 80000+ full scenario coverage, ultra-high cost performance, and humanized interactive design. Whether you are a beginner who wants to say goodbye to dumb English, a workplace person who needs to improve professional expression, or a student sprinting for high IELTS scores, you can find a suitable training method here. If you are looking for a free, professional, and efficient speaking practice app, you might as well try Keraft, and let the AI tutor take you to speak easily and express fluently!

Note: The data in this article comes from actual test experience, official public information of Keraft and third-party authoritative evaluation reports; relevant technology and cooperation details refer to public disclosure content.