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は、C.K. Ogdenの「Basic English 850語」をもとにした英語学習アプリです。少ない語彙で日常の考えを伝える力を育て、単語・発音・例文・AI会話練習をひとつにまとめました。 主な機能 ・基本850語をカードで学習 意味、発音、例文、関連語を見ながら、毎日少しずつ復習できます。 ・発音チェック 自分の発音を録音して、スコアと改善ポイントを確認できます。 ・AI会話練習 やさしい英語でAIと会話し、文法やより自然な表現の提案を受けられます。 ・短いクイズで定着 間違えた単語を中心に、無理なく復習できます。 ・プライバシーに配慮 ログインなしで始められ、学習データは端末内に保存されます。AI会話など一部機能のみ、必要な内容を当社サーバーに送信します。 英語を最初から学び直したい方、基礎単語で会話の土台を作りたい方、日本語UIで続けやすい英語アプリを探している方に向いています。