- You understand it when you read it.
- You pick it out in a multiple-choice question.
- You can't recall it while writing, or you use it with the wrong partner word.
English Vocabulary Training
Master your active vocabulary.
Adaptive placement, active recall, AI feedback, and spaced review for serious English learners who want to use words accurately in writing and speech.
- CEFR and COCA-guided training scope
- Adaptive placement for passive vocabulary baseline
- AI feedback and cross-device learning workflow
Adaptive Placement
Baseline first. Guesswork later.
Active Recall
Move words from recognition into use.
H5 PWA
Works in desktop and mobile browsers.
Cross-device Sync
Resume on phone and desktop.
Know vs Use
Knowing a word is not the same as using it.
Most learners recognize thousands of words they never manage to write correctly. Active Vocabulary trains the gap between the two.
- You spell it from sound and from an English definition.
- You choose the right sense for the context.
- You write your own sentence with it, and AI feedback checks grammar, meaning and collocation.
RecognizedHe made an important influence to me.
Used wellHe had an important influence on my decision.
RecognizedWe discussed about the plan.
Used wellWe discussed the plan.
RecognizedThe teacher emphasized on grammar.
Used wellThe teacher emphasized grammar.
Why Active Vocabulary
Built for output, not just recognition.
The product is designed around the gap serious learners actually feel: they know many words, but cannot retrieve them fast enough in writing and speaking.
Adaptive Placement
Start with a practical passive vocabulary estimate and use it to calibrate learning goals, not just curiosity.
Active Practice Loop
Train through listening, recall, sense selection, and composition instead of stopping at flashcard recognition.
Spaced Review
Keep progress alive with review-first logic, hard review support, and learning records that reflect real study behavior.
Coach and Clarity
Use AI feedback, progress signals, and structured workflow cues to understand what to learn next and why.
How It Works
A four-step loop that stays usable on desktop and mobile.
The workflow matches the product’s actual structure: assess your baseline, train new words, review them on schedule, and watch progress accumulate in reports and stats.
Assess
Use placement to estimate your passive vocabulary baseline and set a more realistic target scope.
Practice
Work through structured active tasks designed to move words from recognition into usable recall.
Review
Return to due words on time and strengthen retention with review-first logic and hard review when needed.
Grow
Track streaks, study velocity, and session history so your vocabulary growth stays visible and actionable.
Real Screens
See the actual product, not placeholder mockups.
These are current web-app screens from the real product: placement, dashboard, practice, stats, and daily records.
Placement that calibrates the starting point
Users begin with an adaptive baseline instead of guessing a level, which makes goals and later practice more defensible.
Stats that show growth and next moves
Mastery, due reviews, weekly velocity, and coach-plan signals stay visible instead of being buried in a secondary screen.
Study history that stays inspectable
Users can revisit a date, inspect finished sessions, and see exactly which words were completed that day.
Methodology
Research-informed, not feature-first.
The methodology page explains the active retrieval logic, desirable difficulty, AI coaching rationale, and why this product centers output quality instead of vanity metrics.
Explore MethodologyPWA and Sync
Built for desktop and mobile browsers.
Active Vocabulary is delivered primarily as an H5 PWA, with cross-device sync, install-to-home-screen support, and workflow continuity across phone and desktop.
- Desktop browser ready
- Mobile browser ready
- PWA install supported
Membership and AI Points
Subscription where it matters, usage where it helps.
Membership unlocks the full learning flow; AI points extend extra cloud AI usage when your daily quota is used up. The app UI stays English-only so learners practice in a professional English environment. International card checkout (Lemon Squeezy) and optional WeChat/Alipay QR are payment options — not a change of product language. This page introduces the model without turning into a pricing wall.
Read product detailsFAQ
Questions external visitors actually ask first.
The detailed operational guidance stays inside the app’s Help page. This section keeps the public page focused on decision-making questions.
Yes. The first version of this landing page and the main app both assume responsive browser use across desktop, tablet, and mobile widths.
Yes. Active Vocabulary is delivered primarily as an H5 PWA, so supported browsers can add it to the home screen or dock for a more app-like experience.
Yes. The main app is designed around cloud-backed progress and session continuity so you can move between devices without losing your place.
No. The product can introduce itself through placement and browsing flows first. Account-linked sync and long-term continuity become more important once you start using it seriously.
No. AI deepens the workflow through composition feedback and coaching, but the product still has a structured learning loop even before every advanced AI path is used.