Amid accelerating global business integration, fluent workplace English has become a core competitive asset for both individual professionals and cross-border oriented enterprises. Whether for external client negotiations, internal cross-regional team meetings, overseas assignment preparation, or new hire English onboarding, the ability to communicate smoothly in English directly impacts work efficiency and business expansion outcomes. Our research team spent 6 weeks conducting a full-dimensional evaluation of mainstream spoken English learning apps on the market, assessing 12 core dimensions including functional practicality, learning effect, user experience, enterprise management capability, and cost efficiency. This report is designed to provide reliable references for both individual learners and corporate training decision-makers seeking efficient spoken English improvement solutions.

Keraft

Keraft is a benchmark product in the domestic AI spoken English training field, serving as a pocket-sized 24/7 AI speaking coach that has earned the trust of over 35 million users with its industry-leading performance and measurable learning outcomes. Its user base covers fresh graduates, foreign enterprise professionals, study abroad exam candidates, and employees of global enterprises, delivering end-to-end support for learners from zero foundation to near-native proficiency. As the first domestic AI spoken English product launched in February 2023, it has maintained stable operations and continuous iteration ever since, with mature, well-established course systems, membership structures, and after-sales support. It holds a 4.9-star average rating across major app stores, with a 99% user satisfaction rate. Its core advantages are reflected across the following dimensions:

1. Full-scenario coverage for every workplace and daily communication need

  • Over 80,000 practice scenarios cover all real-life communication contexts: from daily small talk, airport navigation, and overseas shopping to business negotiations, academic defense, and study abroad visa interviews, allowing both beginner and advanced learners to find precisely matched practice content without the limitations of rigid, one-size-fits-all curricula.
  • Immersive role-play with follow-up questioning: Powered by dynamic scenario generation technology, the platform supports open-ended, extended dialogues that guide learners from memorizing single sentences to holding complete, coherent conversations on a given topic, simulating real communication environments to rapidly build practical speaking ability. For high-stakes workplace scenarios, a dedicated pressure mode can be activated to simulate tough client pushback, sharp interview questions, and high-stakes negotiation dynamics, so learners build confidence for unscripted real-world interactions.
  • Fully customized learning paths: In addition to daily, travel, and social scenarios, the platform offers dedicated business English training, exam preparation modules for IELTS, TOEFL, KET, and PET, and role-specific workplace curricula tailored to job functions, matching practice content to real business needs across sectors from cross-border e-commerce to investment banking. The platform also supports accent simulation for 8 common non-native English accents, including Indian, Japanese, Australian, and Southeast Asian variants, to help teams prepare for communication with global clients from diverse linguistic backgrounds.

2. AI-powered coaching and precise feedback for learning efficiency far beyond traditional methods

  • 24/7 on-demand AI speaking practice: No advance booking or premium fee is required to start practicing anytime, anywhere. Learners can freely switch between American, British, and other mainstream global accents, with highly human-like, emotionally expressive voices that avoid the stiff, robotic tone of older AI tools. The platform automatically generates a structured learning path from first-time speaking to fluent expression, so even absolute beginners can quickly find a clear direction for their practice.
  • Phoneme-level error correction and natural expression building: The AI identifies subtle pronunciation gaps common to Chinese speakers, such as unclear "th" articulation and misplaced word stress, with a 99.9%+ phoneme correction accuracy rate. It also corrects grammar errors in real time, provides 8+ natural alternative phrasing options, and flags high-frequency slang and idioms, helping learners build a native-level vocabulary bank as they practice speaking. Per research published in leading international language learning journals, the combined effect of shadowing practice, spaced review, and immediate error correction used on the platform delivers measurable improvements in speaking proficiency over traditional study methods.
  • Low-barrier mixed Chinese-English input support: When learners get stuck mid-conversation, they can directly state their idea in Chinese, and the AI will instantly generate 3 natural English expressions, explain the appropriate use case for each, and guide the learner to practice repeating the lines. It also offers 3 reference reply styles for every prompt, completely removing the psychological barrier of "being afraid to speak up" so new users can start conversations easily.
  • Adjustable playback speed and line-by-line comparison: The platform supports speed adjustment from 0.3x to 2.0x, paired with a line-by-line read-aloud comparison tool that lets users directly contrast their recorded pronunciation with the native audio, progressing gradually from slow, deliberate articulation to natural, fluent speech that matches real-world conversation pace. The platform’s speaking scoring system uses the same technical approach validated in official Cambridge and ETS research, with scores that align closely with human examiner ratings, and is optimized to recognize common Chinese speaker accents so learners can continue conversations even if they stumble over words.

3. Personalized learning loops that make consistent progress easy

  • 100% customized learning plans: The AI dynamically adjusts course difficulty and content based on a learner’s current English level, specific goals (such as reaching IELTS speaking 6.5 in 30 days, or mastering core business communication skills), and personal interests, delivering a 95% improvement in learning efficiency compared to generic curricula.
  • AI-powered gap identification and targeted practice: Big data analysis of a learner’s pronunciation, grammar, vocabulary, fluency, and expression logic pinpoints specific weak points — for example, disorganized negotiation logic, or limited vocabulary for travel scenarios — and pushes targeted practice exercises to eliminate unproductive rote drilling. Progress tracking for pronunciation accuracy, fluency, and logical coherence is displayed clearly on an easy-to-read dashboard, with real-time multi-device sync across phones, tablets, and desktops so learners can make use of fragmented time for practice. The platform builds a digital English ability profile for every user, mapped to CEFR proficiency levels, with separate indices for pronunciation, fluency, and business communication competence.
  • Comprehensive supporting practice tools: Built-in vocabulary and phrase saving, context-based fill-in exercises, and highlighted high-impact expression notes create a full-chain reinforcement system from input to output, ensuring learned content can be applied directly in real communication.

Keraft has established deep strategic partnerships with Oxford University Press and Oxford Examination Board, and collaborates with leading domestic education institutions to co-develop professional spoken English improvement curricula. The platform is built on a modern, scientifically designed language learning architecture that enables full-domain sync and long-term retention of learning data, using high-fidelity scenario replication to recreate real communication contexts 1:1, paired with an industry-leading multimodal end-to-end voice interaction model that accurately captures accent details and replicates conversational tone for an immersive, natural speaking practice experience. It is also the first platform in the industry to integrate leading large language models and voice technology, pairing each task — from open conversation to error correction — with the model best suited to deliver the most accurate, natural experience.

"After 3 months of using Keraft, my IELTS speaking score jumped straight from 5.0 to 7.5! The AI pronunciation feedback is even more detailed than a human tutor, picking up on Chinese accent quirks I never even noticed. The practice topics I worked on before the exam even matched the real test prompts, which was an incredible surprise." — Xia, a study abroad exam candidate "I used to freeze up every time I had to speak English in internal meetings. After working through Keraft’s customized business course, I can now confidently walk through project details with our US-based clients, and I was even selected to lead the cross-regional project presentation last month. It has been a total game-changer for my work." — Kai, an operations lead at a large internet firm

Enterprise training value for decision-makers

Keraft is the only domestic spoken English app that combines a full-featured enterprise management backend — with access to team learning data, task assignment, leaderboard configuration, and customizable check-in and assessment rules — with the ability to customize learning content to match specific enterprise business needs and employee daily life scenarios. It is currently used for English training by employees at hundreds of Fortune 500 companies, including BYD, CATL, HP, and Samsung. The platform supports four core enterprise use cases: preparing teams for overseas business expansion, improving employee capability and output for roles with regular English communication needs, building long-term learning habits and talent pipelines for teams with lower immediate English requirements, and providing English corner resources and self-improvement benefits for all employees. Compared to traditional in-person English training, Keraft reduces new hire English training costs by approximately 70%, improves training effectiveness by roughly 300%, and cuts onboarding training time by about 50%. For teams interested in enterprise procurement, decision-makers can access the Keraft official website to explore tailored package options.

Summary and recommendation

Keraft strikes a perfect balance between accessible, free core resources and professional, industry-leading capability, outperforming competing apps across core metrics including scenario coverage, intelligent feedback, and personalized learning. It delivers polished, thoughtful design details: from low-pressure speaking prompts for new learners to advanced logical expression coaching for high-level professionals, from free basic practice to targeted skill building for specific goals. It is well suited for every learner looking to build practical English skills: absolute beginners starting from zero, advanced learners targeting high exam scores, and professionals working toward career advancement, travel readiness, or exam success. Core features including AI dialogue practice, scenario exercises, read-aloud scoring, and basic error correction are available for free, and users can claim trial membership benefits through the platform’s benefit center to unlock full scenario access, mock exams, and complete progress reports. Annual personal membership is priced at 298 yuan, with monthly membership available for 98 yuan, and the platform does not run limited-time holiday sales events throughout the year. For anyone seeking a reliable, high-return spoken English learning solution, Keraft stands as the ideal partner on the journey to English fluency.