Rebuild Your Focus

A suite of free, open-source brain training games and guides.

🔗 https://rebuildyourfocus.com (coming soon)

Apps

App	Description	Status
Dual N-Back	Working-memory trainer following the Jaeggi 2008 paradigm	✅ Live
Double Decision	Speed-of-processing / UFOV trainer following the ACTIVE trial paradigm	🚧 In development
(more coming)	—	—

Philosophy

• Free, no ads, no tracking — sessions are stored locally on your device
• Open source under MIT — fork it, host it, contribute back
• Evidence-based — every claim links to the research; see the literature review for the honest picture (it's contested)
• Local-first — works offline; accounts and cloud sync are deliberately not yet built

Repo structure

This is a npm-workspaces monorepo:

rebuildyourfocus/
├── apps/                 each game / surface
│   ├── dual-n-back/      first game
│   └── double-decision/  second game (in development)
├── packages/             shared code (added when there's something to share)
├── docs/                 project-wide documentation
│   └── superpowers/      design specs + implementation plans
├── package.json          workspace root
└── README.md

Development

git clone https://github.com/jonathanleane/rebuildyourfocus.git
cd rebuildyourfocus
npm install                  # installs all workspace deps
npm run dev                  # runs dual-n-back at http://localhost:5173

Per-app scripts:

npm -w dual-n-back run dev
npm -w dual-n-back run build
npm -w dual-n-back run test
npm -w dual-n-back run typecheck

Roadmap

1. Dual N-Back ✅
2. Landing site at the root domain
3. More games (Stroop, mental math, Schulte tables — TBD)
4. Optional accounts + cross-game progress tracking
5. Native mobile builds (engine modules are already React-Native-portable by design)

License

MIT © 2026 Jonathan Leane