# zzappa

- **Event:** [Built with Opus 4.6: a Claude Code hackathon](https://cerebralvalley.ai/e/claude-code-hackathon)
- **When:** Feb 10 at 12:00 PM – Feb 17 at 10:00 AM (EST)
- **Where:** Location TBA
- **Team:** [Artem Golenchenko](https://cerebralvalley.ai/u/zzappa)
- **GitHub:** https://github.com/zzappa/gradient_reading
- **Demo video:** https://youtu.be/53Ojkimo5fE
- **Gallery:** https://cerebralvalley.ai/e/claude-code-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/claude-code-hackathon/hackathon/gallery/62

Gradient is a language learning Claude-powered app that transforms English text progressively into a target language through 7 levels of "gradient immersion". Users read a story that gradually shifts from English to target language — grammar first, then vocabulary — so the target language's structure should become intuitive before new words appear. The reader interface features inline annotations with translations, pronunciation (IPA), and grammar notes in a synchronized side panel. Terms are explained only on first occurrence across the entire project. Additional tools include side-by-side comparison mode, contextual grammar chat (double-click any word), comprehension quizzes, text-to-speech, and spaced-repetition flashcards — all generated automatically from the reading content. Claude can answer any questions on grammar and vocabulary, and prepare personalized study sessions and quizzes.

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Markdown version of https://cerebralvalley.ai/e/claude-code-hackathon/hackathon/gallery/62. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt