Everything you need to know about practicing LeetCode with Dokicode, guest mode, the Chrome Extension, supported languages, and data privacy.
Start Guest Trial Now →Dokicode is a Japanese visual novel (Galgame / Bishoujo ADV) coding companion web app and Chrome Extension that helps software engineers practice 2,300+ rated LeetCode problems across 12 structured algorithm study plans alongside 6 voiced companion heroines.
Dokicode 是結合日系戀愛養成視覺小說（Galgame）與 12 份系統化 LeetCode 演算法題單的刷題陪伴網站與 Chrome 擴充功能，讓準備技術面試與演算法的過程不再孤單。
Yes. New visitors can select any of the 6 heroines and enter the study room immediately in Guest Mode to interact, headpat, listen to voice lines, and browse the 12 algorithm study plans. Google Sign-In is only requested when you click Solve or Save Progress.
可以！新訪客無需事先登入 Google，選完女主角即可直接以訪客模式進入書房體驗摸頭、對話互動與瀏覽 12 份演算法題單；直到準備開始解題或儲存雲端進度時才需登入。
Yes. All 6 companion heroines, all 12 algorithm study plans (2,300+ LeetCode problems), the pre-authored progressive hint steps (Steps 1–3), spaced repetition review, and the Chrome Extension are free.
是的，六位女主角、12 份演算法題單（超過 2,300 題）、前三階漸進式提示、間隔重複複習與 Chrome 擴充功能皆免費開放使用。
On desktop Chrome/Chromium browsers, installing the Dokicode Chrome Extension gives you the best experience: your heroine accompanies you directly on LeetCode problem pages and reacts automatically when you click Run or Submit. On mobile or other browsers, you can still open problems on LeetCode and use the in-room “I solved it” button to log your solves.
在電腦端 Chrome 瀏覽器建議安裝擴充功能，即可在 LeetCode 題目頁獲得女主角即時陪伴與自動判題同步；若使用手機或其他瀏覽器，也可以在解完題後點擊書房內的「我解出來了」按鈕紀錄進度。
Never. The extension never reads or sends your editor contents or keystrokes. It only reads the submission outcome (Accepted, Wrong Answer, Time Limit Exceeded, etc.) returned by LeetCode. Read our full Privacy Policy for details.
絕不讀取。擴充功能不會讀取或上傳你的程式碼編輯器內容，僅接收 LeetCode 執行或提交後的判題狀態。
Dokicode supports Traditional Chinese (繁體中文), Simplified Chinese (简体中文), English, and Japanese (日本語) across the UI, story events, daily conversations, and algorithm hints, paired with Japanese character voice cues.