Bookaholic

Bookaholic turns words into vocabulary you actually keep.

Read a book, tap a word you don't know, and Bookaholic shows its reading and definition instantly — then saves it to your Flashcards together with the exact sentence you found it in. Later, it schedules that word for review using FSRS, a modern spaced-repetition algorithm, so you study each word right before you'd forget it.

Everything runs on your device. No account, no sign-up, and it works completely offline.

READ • Import EPUB, TXT, PDF, and Markdown files • Adjustable fonts, size, spacing, margins, and light/dark themes • Page-turn or continuous scroll; per-book settings if you want them • Bookmarks and highlights

LOOK UP • Long-press any word for its reading and meaning • Built-in offline dictionaries from open data (JMdict, Japanese WordNet, KANJIDIC2) — no network needed • Also looks up English and Chinese words • Words save automatically with their reading, definitions, and the sentence they appeared in

REVIEW (spaced repetition) • FSRS scheduling with a simple "Forgot / Remembered" tap (optional four-button grading) • A memory-target setting to trade review workload against retention • Automatic decks for every book, plus your own tag-based collections • Smart study sessions: focus on what's most urgent, most-forgotten, or random • Word → meaning, meaning → word, and cloze (fill-the-blank) card styles • Read-along highlighting shows which words you're still learning • Statistics: streak heat-map, words-learned growth, upcoming-reviews forecast, per-book mastery, and your true retention rate versus your target • Optional gentle daily reminder — one notification, no nagging

PRIVATE BY DESIGN • Your library, vocabulary, progress, and settings never leave your device • No tracking, no analytics, no ads, no account

Bring your own books and start building a vocabulary that sticks.

Bookaholic 把「零散的生詞」變成「真正記得住的單字」。

讀一本書，點一下不會的字，Bookaholic 立刻顯示讀音與釋義，並自動把這個字連同你遇到它的那句原句一起存進單字本。之後，它用 FSRS：間隔重複演算法——在你快要忘記之前，剛好把這個字排進複習。你不用手動整理牌組，讀到哪、生字就自動累積到哪。

釋義預設繁體中文優先，採台灣標準用字，看得懂、不用再翻譯。所有資料都留在你的裝置上：無需帳號、無需註冊，完全離線也能用。介面支援繁體中文與英文，跟隨系統語言。

閱讀 • 匯入 EPUB、TXT、PDF、Markdown 檔案 • 支援振假名、直排（直書）與橫排版面 • 可調字型、字級、行距、邊界，明亮／深色主題 • 翻頁或連續捲動；需要的話可為每本書單獨設定 • 書籤與畫線標註

查詞 • 長按任一個字，立即看到讀音與釋義 • 內建離線辭典，取自開放資料（JMdict、日本語 WordNet、KANJIDIC2），不需連網 • 也能查英文與中文單字 • 生字自動存檔，含讀音、釋義與出現的原句

複習（間隔重複） • FSRS 排程，只要點「忘記／記得」即可（也可選四段評分） • 可設定「記憶目標」，自行取捨複習量與記憶率 • 每本書自動生成牌組，也能用標籤建立自己的收藏 • 智慧複習：優先複習最緊急、最常忘、或隨機抽考 • 卡片形式：單字→釋義、釋義→單字，以及克漏字（填空） • 隨讀標色：讀書時幫你標出還沒記熟的字 • 統計：連續天數熱力圖、學會單字的成長曲線、未來待複習量預測、各書精熟度，以及你的真實記憶率 vs. 目標值 • 可選的每日溫和提醒——一則通知，不會一直煩你

隱私內建 • 你的書庫、單字、進度與設定，永遠不離開你的裝置 • 無追蹤、無分析、無廣告、無帳號

帶上你自己的書，開始累積一輩子記得住的單字。