Kay English Learning vs Basic 850

Kay is a full English learning app—not flashcards alone. Study real video and audio with captions, grow vocabulary with a clear memory system, and use AI when you need deeper help. VIDEO & LISTENING • YouTube caption study: tap any word, bilingual lines, karaoke-style follow-along, and a focused player built for learning • BBC 6 Minute English: pre-listening questions, word-level follow, favorites, sentence loop, search & filters, saved progress • Family Album, U.S.A.: full-series listening with cleaner intros and tighter highlighting • Offline video cache with resume—keep studying on the go VOCABULARY & REVIEW • Mark words Unfamiliar / Fuzzy / Mastered / Known—Known words leave daily review • Unified Today Study: reviews first, then new words • Flashcards, practice drills, and listen-along share one progress model • IPA, UK/US audio, definitions, examples, and synonym notes • Optional Ogden Basic English 850 and Basic 1368 word lists for a clear foundation • Study Core 3000 and Core 5000; Longman 3000 is coming soon for the next common-word list AI STUDY TOOLS • Sentence generation, writing coach, and English diary feedback • Deep word analysis, memory cards, and word-family maps • In-context explain for a word inside the current subtitle or sentence COURSES & NOTES • New Concept English courses with progress and mastery filters • Text notes with karaoke highlight, font controls, and import • Select multi-word phrases and mark familiarity ACCOUNT & PRO • Sign in to sync study data across devices; monthly learning board • Free core learning; AI Pro / Pro+ for higher AI limits, AI captions, and expanded offline • Daily word home-screen widget • No ads Privacy: study progress stays on device and can sync when signed in. Minimal first-party analytics help improve reliability—no third-party ad SDK. Kay is for learners who want English from real media plus a serious word system—not another isolated word list. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Basic 850 is a calm, offline reference and learning app for the Basic English 850-word system — the essential words chosen to express almost anything in clear, plain language. No accounts. No subscriptions. No noise. Just the complete Basic English 850 word system, organized the way it was designed. FOUR CLASSIC CHAPTERS • Operations — the 100 core words that do the work of a sentence • Things (General) — 400 general nouns • Things (Picturable) — 200 concrete, picturable nouns • Qualities — adjectives and their opposites WHAT YOU CAN DO • Browse every word by its original category • Hear natural pronunciation with built-in text-to-speech • Search the list instantly — completely offline • Mark the words you know and keep track of your progress FREE TO START The full Operations chapter (100 words), pronunciation, and chapter search are free. Dark Mode is included. ONE-TIME UNLOCK — $2.99 Unlock all 850 words across four chapters, full-library search, and saved progress that stays with you. One payment, yours forever. No subscription, ever. WHO IT'S FOR • Intermediate English learners who want the most useful core words • Technical writers and plain-language enthusiasts • ESL teachers sharing a focused, authoritative list • Anyone who likes saying more with fewer words Everything works offline. Nothing about your learning is uploaded — your progress stays on your device.