AAC Board AI

Winner - Google Chrome Built-in AI Challenge 2025 (Most Helpful Application)

AAC Board AI is an Augmentative and Alternative Communication board that helps people who cannot rely on speech communicate more easily and naturally. It is enhanced with Built-in AI for on-device proofreading, rewriting, and translation — keeping interactions private, fast, and reliable offline.

Try the live demo at aacboard.app. Requires Chrome or Edge with Built-in AI enabled.

Key Features

• Grammar Correction – Turns telegraphic text into clear sentences (Proofreader API).
• Tone Adjustment – Rewrites messages in direct, professional, or friendly tones (Rewriter API).
• Translation – Translates messages and boards between languages (Translator API).
• Text to Speech – Reads messages aloud (Web Speech API).
• Offline Ready – Installs as a standalone app with automatic updates (PWA).
• Open Board Format – Imports .obf and .obz files (examples).

Enabling Built-in AI

Grammar correction and tone adjustment require experimental browser flags.

Chrome:

chrome://flags/#proofreader-api-for-gemini-nano
chrome://flags/#rewriter-api-for-gemini-nano

Edge:

edge://flags/#edge-llm-rewriter-api-for-phi-mini

Quick Start

Requires Node.js 24+.

git clone https://github.com/shayc/aac-board-ai.git
cd aac-board-ai
npm install && npm run dev

Open http://localhost:5173

Development

npm run dev             # Start dev server
npm run lint            # Lint
npm test                # Run tests
npm run build           # Typecheck + production build

Technical Stack

• UI: React 19, TypeScript, Material UI, React Router
• AI: Gemini Nano (Chrome) / Phi 4 Mini (Edge)
• Speech: Web Speech API
• Storage: IndexedDB
• Data: open-board-format (OBF/OBZ file parsing)
• Tooling: Vite, Vitest, Playwright

See full architecture details in docs/architecture.md.

Loading a Board via URL

Load a board by passing an OBF or OBZ file URL as the board query parameter:

https://aacboard.app/?board=https://example.com/board.obz

The app fetches, imports, and navigates to the board automatically.

References

• Chrome Built‑in AI
• Edge Built‑in AI
• Open Board Format

Contributing

While I'm thrilled if you find this code useful, this repository serves as my personal workspace and I am not accepting pull requests at this time. Feel free to fork the project and adapt it to your own needs under the MIT license.

License

MIT © Shay Cojocaru