Desktop study app for structured curricula with quizzes, spaced repetition, AI study tools, and persistent annotations.
- Course reading — structured curricula with book-like prose, 18 themes, adjustable font size, page transitions, section navigation, and in-lesson search
- Quizzes — MCQ, cloze drill, and cumulative review quizzes with instant scoring and confetti
- Spaced repetition — FSRS-5 flashcard deck with due/starred/all filters + custom user cards
- AI study tools — Feynman Explain, Reframe, and Drill skills that copy prompts to Perplexity (zero setup, no API key)
- Annotations — persistent highlights, notes, and bookmarks per module
- Search — ⌘K global search across lessons, notes, and highlights with section-level scroll-to
- Study tools — pomodoro timer, focus mode, per-course/global stats, keyboard shortcuts
- Internationalization — 4 locales (English US/GB, 繁體中文, 简体中文)
See docs/ for detailed architecture, conventions, and reading experience.
- Bun 1.0+
- macOS (Electrobun desktop app)
bun install # install dependencies
bun run start # build + launch desktop appbun run dev # dev mode (HMR via Vite)
bun run dev:hmr # Vite HMR + Electrobun concurrently
bun run build # production build
bun test # run all tests (bun:test + happy-dom)
bun run check # tsc + eslint + prettier
bun run knip # find unused code/exports/dependencies| Purpose | Library |
|---|---|
| Desktop shell | Electrobun |
| UI | React 19 + TypeScript strict mode |
| State management | Zustand |
| Styling | Tailwind CSS |
| Markdown | react-markdown + remark-gfm + rehype-highlight |
| i18n | i18next + react-i18next |
| Diagrams | Mermaid |
| Build | Vite + Bun |
MIT