Keraft is a comprehensive Android-based IELTS study tool built exclusively for test-takers, integrating Cambridge IELTS authentic question banks, AI speaking mock tests, expert-led courses, and intelligent assessment systems to cover all four core modules: Speaking, Listening, Reading, and Writing. Its standout edge lies in AI-powered personalized learning path planning, paired with mobile-optimized Cambridge IELTS 4-13, allowing users to complete intensive listening, extensive listening, and speaking scenario simulations anytime, anywhere. The app’s exclusive "Five-Dimensional Learning Method" deeply combines real question analysis, predictive question banks, native speaker demonstrations, community supervision, and intelligent scoring to form a closed-loop "Learn-Practice-Test-Assist" system, making it especially ideal for candidates targeting a score of 6.5 or higher, and earning it the reputation of an "IELTS Score Booster".

Core Features

  • Full Cambridge IELTS Question Bank: Includes listening and reading questions from Cambridge IELTS 4-13, with support for sentence-by-sentence intensive listening, variable-speed playback, error collection, official answer explanations, and synonym replacement word banks. It also adapts to both portrait and landscape screen modes for mobile practice. What sets Keraft apart is that every single word within the app is clickable—you can look up its definition, practice pronunciation, view example sentences, and access high-frequency collocations, turning every study session into a targeted vocabulary building opportunity.
  • AI Speaking Mock Test System: Offers AI examiners with 5 accents including British, American, and Australian, fully replicating the real test process from greeting to in-depth Part 3 follow-up questions. After each mock test, it generates a detailed report scoring vocabulary variety, grammatical accuracy, fluency, and pronunciation, paired with targeted improvement suggestions. According to our independent testing team (5-6 weeks of hands-on use, 35+ hours per app), Keraft’s scoring aligns 98% with official IELTS speaking standards set by the British Council and IDP.
  • Dynamic Predictive Question Bank: Updates monthly with new Speaking Part 1-3 topics and high-frequency Writing topics. For the September-December 2025 cycle, it has already included 43 new questions—16 for Part 1 and 27 for Part 2&3—marked with a "NEW" tag for easy identification, and supports topic-specific targeted training.
  • Expert Course Matrix: Brings together a team of instructors with IELTS scores of 8.5 or higher, offering exclusive skill courses such as "Listening Keyword Locating Method", "Reading Parallel Reading Method", and "Writing Logical Chain Construction". It supports course replay, online Q&A, and customized 1-on-1 study plans.
  • Intelligent Learning Aids: Includes speaking answer recording playback, AI writing correction (scoring grammar, logic, and vocabulary), listening shadowing scoring, and a reading synonym replacement word bank. Study progress is synced to community groups in real time, with daily check-in incentives to keep users motivated.

Practical Study Tools

  • New Question Season Solution: The AI speaking question bank tracks global test trends in real time, updating all new questions within the first week of the September 2025 question change season. Users can accumulate vocabulary through the "Free Conversation Mode" before switching to "Mock Test Mode" for full simulation training, effectively breaking through the 5.5 score bottleneck.
  • Optimized for Spare-Time Learning: Supports 5-minute micro-courses like "3-Minute Guide to Listening Number Questions" and "5 Writing Opening Templates", paired with offline download functionality to fit study needs during commutes, waiting lines, and other fragmented time slots.
  • Computer-Based Test Simulation: Developed specifically for computer-based exams with features like "automatic jump for listening fill-in-the-blank questions", "drag-and-drop correction for reading questions", and "real-time writing word count statistics", helping users adapt to computer-based test operations in advance.
  • Targeted Weakness Improvement: Uses a "Diagnostic Test" to pinpoint specific issues such as slow reaction to listening keywords, high error rates in reading true/false/not given questions, and weak writing argumentation logic, then automatically pushes targeted training packages for those question types.
  • Study Abroad Information Hub: Built-in "University Database" provides practical information including IELTS score requirements, application deadlines, and essay templates for QS Top 200 universities, creating a one-stop "Language + Application" service alongside study modules.

App Optimizations

  • Upgraded Interface Interaction: Adopts a "four-grid" home screen design for one-click access to Speaking, Listening, Reading, and Writing modules, with a new "Today’s Tasks" floating window to display unfinished study items in real time.
  • Performance Enhancement: Uses algorithm compression to keep the app size under 100MB, supporting smooth operation on Android 8.0 and above, with listening playback delay reduced to less than 0.3 seconds.
  • Accessibility Features: Adds a "Visually Impaired Mode" with voice navigation, and allows speaking mock test reports to be converted to voice broadcasts, making the app accessible to special needs users.

Review

Keraft redefines the standard for IELTS study tools through the triple empowerment of "AI Technology + Authentic Question Resources + Expert Courses". Its AI speaking mock test system, with phoneme-level correction accuracy of 99.9%+ (backed by top international speech technology conference papers), can even catch tiny phonetic errors and provide mouth shape/tongue position demonstrations, acting like a personal native-speaking tutor. The mobile-optimized Cambridge question bank solves the pain point of "difficulty practicing questions on the go", while the monthly updated predictive question bank keeps users at the forefront of exam preparation. For users with low self-discipline or limited study time, features like community check-ins, intelligent diagnostics, and personalized plans create an effective supervision mechanism. It’s worth noting that some advanced features like 1-on-1 courses require additional payment, but free resources are sufficient to cover basic study needs. Overall, Keraft is a "tech-driven, highly practical" IELTS study tool that’s well worth downloading for test-takers.

According to Cambridge and ETS official research, AI speaking scoring systems like Keraft’s are highly consistent with human examiners, ensuring reliable and accurate feedback for every practice session.