English Vocabulary Builder
The best 50 English Vocabulary Builder AI tools - Free & Paid
Explore 50 AI for English Vocabulary Builder
Vocabulary AI is a language-learning platform that enhances vocabulary retention through personalized lists, instant translations, audio pronunciations, and scientifically timed practice sessions, accessible via web, mobile app, and Chrome extension.
Freemium
Vocabrain is an AI-powered English practice assistant offering written and voice chat for sentence building, speaking, listening and pronunciation drills, error detection with corrected alternatives, grammar explanations with exercises, vocabulary grouped by parts of speech, and progress tracking.
Freemium
Polyglot Media offers AI language learning tools including a free Vocabulary Lesson Generator and additional tools for members. These tools should be used with a qualified teacher.
Freemium
AI IELTS Writing Checker evaluates essays on grammar, vocabulary, cohesion, and task response, offering instant feedback and revision guidance. It also includes Speaking, Listening, and Reading simulators, plus an essay bank for ideas and progress tracking.
Free
AI tool that automatically builds custom language workbooks in 23 languages, matching user proficiency (A1‑C2) and chosen topics. It generates varied exercises—fill‑ins, multiple choice, translation, emoji vocab, and more—exported as printable PDFs for offline or online use.
Paid
- $19
VocabGenerator.com extracts unfamiliar terms from PDFs, images, subtitles, or topics, translates them into 58 languages, and displays each word on a flashcard. Users can review and export cards to Anki, Quizlet, CSV, PDF, and other formats without an account.
Free
Fluently uses AI to provide real‑time speaking practice, evaluating pronunciation, grammar, vocabulary, and fluency. It adapts lessons, tracks progress, and offers live feedback during calls or recordings for English and Spanish learners.
Free
Wordvice AI provides real‑time grammar checking, paraphrasing, translation, summarization, plagiarism and AI‑content detection, plus citation generation across multiple languages. It integrates with Chrome and Word, supporting students, researchers, professionals, teams, and offers on‑demand human e
Freemium
- $8.45/mo
CorrectEnglish is an AI writing assistant delivering spelling, grammar, and style corrections on Android, iOS, and browsers. It offers contextual word suggestions, error detection, a plagiarism checker, formatting guides, readability scores, and integrates with extensions and research tools.
Freemium
- $24/mo
LanguageTool is an AI grammar, spelling, and style checker supporting 30+ languages. It offers real‑time browser extensions, desktop and Word add‑ins, advanced Picky Mode, paraphrasing, and an API for developer integration.
Free
Wordera offers bite‑size lessons, adaptive drills, and a structured daily plan for vocabulary building. It provides learning hubs, a test center, customizable themes, shared word lists, and game modes, supporting exam preparation and professional use.
Subscription
- $9.99/mo
31Memorize uses machine learning and spaced repetition to optimize English vocabulary learning. It offers a curated library, personalized review schedules, a vocabulary search engine, and mnemonic techniques to enhance retention and improve learning efficiency.
Free trial
Deep English offers an online platform with free 7‑day video courses, AI chatbot conversations, and pronunciation checks. It provides listening practice, voicebot speaking feedback, live Zoom groups, and 24/7 community voice/text exchanges for conversational, business, and academic English.
Free
Lingo Champion personalizes language lessons by simplifying real‑world articles, offering instant word explanations and context translations, auto‑logging vocabulary, generating spaced‑repetition flashcards, and tracking progress across reading, listening, and speaking in over 20 languages.
Freemium
- $5.99/mo
##Dict is an AI vocabulary tool that offers a daily word to enhance language skills. It provides definitions, promotes interactive learning among users, and helps build a stronger vocabulary for improved communication in both writing and speaking.##
Freemium
Linguix is a writing tool that offers free grammar check, analyzes team performance over-time, can be accessed through various platforms, and has a clean and modern UI.
Freemium
- $99
LexiGym is an iOS app that trains vocabulary offline across multiple languages. It supports personal and ready‑to‑use dictionaries, four adaptive exercises, cross‑dictionary statistics, and a two‑click language switch for quick changes.
Free
Lingly delivers on‑demand vocational English training for UK jobseekers, offering adaptive modules tailored to sectors such as social care, retail, and food service. Users track progress, receive instant feedback, and practice with native‑accent content.
Paid
Quiz Wizard instantly generates custom multiple‑choice questions, flashcards, and theory sheets from any topic. It enables teachers and course creators to build personalized training materials for medical, language, or science subjects, ready for lesson integration.
Freemium
Lingoleap is an AI-powered platform for TOEFL and IELTS prep, offering instant feedback, personalized assessments, and over 1,000 practice questions. It features a mind map tool to help users structure their writing effectively.
Free trial
Phrasly is an AI tool that generates undetectable text, bypasses AI detectors, provides grammar checking, supports multilingual content generation, and features a co-writing assistant for assignments, content creation, and skill enhancement.
Free trial
Boldvoice is an AI application that enhances American English pronunciation by offering instant feedback and guided lessons. It targets challenging sounds and promotes consistent practice, supporting users worldwide to achieve clear and confident speech.
Free trial
Essay Builder AI creates structured, plagiarism‑free essays quickly. Users choose type, length, and topic, then receive coherent text in seconds. It offers a dashboard, built‑in plagiarism check, and PDF/Word export, suitable for all academic levels.
Freemium
- $5/mo
Root Vocab lets users build custom vocabulary decks in 50+ languages, using AI‑generated examples, pronunciations, and translations. Flashcards employ FSRS spaced repetition, while AI reviews essays and offers a free grammar library.
Freemium
- $4/mo
Quizbot is an AI tool that generates high-quality test questions in English using various templates and can be customized to match the user's preferred writing style.
Free trial
Solvely delivers AI‑driven homework help from kindergarten to graduate level, solving handwritten, typed, or photo math problems with step‑by‑step explanations, generating quizzes, essays, and audio‑to‑notes, while integrating with major LMS and permitting unlimited follow‑ups.
Free
Avatalks is an interactive language learning platform offering six practice modes for vocabulary, grammar, listening, reading, and writing with real-time feedback. It includes an AI chat partner, native speech practice, and progress tracking across twenty languages.
Freemium
- $19.99/mo
This AI tool is a free online writing assistant with advanced features to enhance writing skills and prevent plagiarism.
Freemium
Generate original rhyming poems instantly in multiple languages—English, German, Spanish, French, Italian, Dutch, Polish, Portuguese, Romanian. Specify a topic or prompt to receive structured verse with consistent rhyme and meter. No downloads; web‑only.
Free
Use of English AI offers unlimited Cambridge English practice across B1‑C2 levels, generating exercises from 15,000+ official items. It delivers detailed feedback, instant scoring, tailored improvement tips, and teacher‑friendly content.
Freemium
WordChanger is an AI‑powered word rewriter that suggests alternative vocabulary, adjusts tone, and corrects grammar in real time. It highlights replacements for easy acceptance and offers readability analytics, fluency checks, and plagiarism scanning across multiple languages.
Paid
IELTS Champ offers AI‑powered mock exams for writing and speaking, providing real‑time grading on all four criteria, instant word‑count checks, detailed feedback, and progress tracking for Academic and General Training users.
Freemium
Flai is an AI language learning coach that offers personalized feedback on vocabulary, grammar, and assignments. It tracks your progress, provides suitable tutors, and offers digital certificates for completion.
Subscription
SmallTalk2Me uses AI to give instant feedback on fluency, pronunciation, vocabulary, and grammar. It offers CEFR‑level tests, IELTS, interview, business, and daily practice sessions that track measurable improvement over time.
Free
Hemingway Editor analyzes text for readability, highlighting long or dense sentences, adverbs, and passive voice, suggests simpler wording, and—via Editor Plus—adds AI-assisted fixes, advanced grammar checks and tone controls for faster revision.
Free trial
Resoomer summarizes web articles, PDFs, DOCX, EPUB, and plain text, extracting key points and arguments. It offers instant, editable summaries, a text editor, paraphraser, synonymizer, and word counter in multiple languages for students, researchers, writers, and professionals.
Freemium
SlangThesaurus Translator is an online tool utilizing OpenAI's ChatGPT API to interpret urban slang, colloquial expressions, and informal language. Users can input words or phrases to generate slang translations.
Free
Web‑based grammar checker supporting 27 languages—including Tagalog and English variants—highlights spelling, grammar, punctuation errors and offers corrections. It accepts rich text up to 15,000 characters, detects GPT‑style typos, and includes an AI content detector, usable from any browser.
Free
HomeworkAI creates concise summaries, multiple‑choice exercises, and interactive stories from any reading text, letting teachers generate worksheets with one click. An editor lets educators refine content before sharing with students, consolidating everything into a single document for streamlined l
Subscription
- $11/mo
AI Writer offers AI‑powered tools to generate articles, blogs, captions, emails, and ads. Set tone, character limits, and platforms for titles, outlines, and meta descriptions. Built‑in expand, shorten, paraphrase, summarize, grammar, keyword, and translation features streamline editing and ensure q
Free
An AI paraphrasing tool that rewords up to 125 words per input with unlimited use. Offers ten modes, a synonym slider, AI thesaurus, export options, originality detection, browser extensions, and multilingual support for students, researchers, and professionals.
Subscription
LangLabAI enables users to create personalized language workbooks, enhancing reading, writing, speaking, and listening skills. It features a glossary, topic selection, essay assessment, and progress tracking, making it a valuable resource for language learners.
Freemium
Write2Learn uses AI to enhance English vocabulary and grammar study, integrating Collins and Cambridge dictionaries. It offers interactive dialogues, visual sentence diagrams, practice exercises, a chat Q&A, progress tracking, and customizable prompts for flexible learning.
Freemium
AI Summarizer quickly condenses essays, reports, and articles into short paragraphs or bullet lists. Paste text, upload DOCX/TXT/image, or give a URL; adjust summary length or set custom styles. Supports Spanish, French, German, Portuguese, and offers private, downloadable .docx outputs.
Free
iAsk.Ai delivers instant, factual answers to natural‑language questions from authoritative web sources, and offers essay drafting, advanced grammar checks, academic summarization, PDF analysis, image generation, URL bullet‑point briefs, and one‑click grammar correction. Accessible via browser extens
Freemium
- $9.95/mo
TOEFL Practice offers over 50 realistic practice tests covering all exam sections. Users receive immediate AI feedback on writing and speaking, track progress through analytics, and enhance vocabulary and fluency for improved TOEFL performance.
Free trial
AI quiz generator that converts text, images, PDFs, videos, and URLs into multiple‑choice, true/false, fill‑in‑the‑blank, higher‑order, and Bloom’s taxonomy questions. Supports up to 80k words, editing, export in various formats, study mode, and embedable quizzes.
Freemium
- $15/mo
Language Atlas offers daily 30‑minute CEFR‑aligned lessons in French, Spanish, German, Italian, and Portuguese. Lessons blend audio, quizzes, and concise grammar. Spaced‑repetition flashcards and speaking practice track progress to A0‑C1, fostering retention and conversational fluency.
Subscription
- $20/mo
OETStudy is an AI platform designed for Duolingo English Test (DET) preparation, offering over 6000 practice questions, AI-driven practice sessions, instant feedback, and study tools to enhance exam readiness.
Free