Simple rules for a lightweight digital product.

4000 Weeks is published by Logic & Light.

For questions about the app, contact support@logic-and-light.com.

4000 Weeks is provided as freeware. The public web app can be used without checkout, an account, or paid access restoration.

Planner data is stored locally in your browser unless a future feature says otherwise. You are responsible for exporting backups if you want to preserve or move your planner.

You may use the app and exported files for personal, non-commercial planning and reflection.

You may not resell, redistribute, sublicense, or publish the app, templates, exports, or generated files as your own product.

The public app is available without a paid session. Private preview routes may still be gated for internal testing.

Access may change or be interrupted if the site is updated, moved, retired, or if usage violates these terms.

The application may evolve over time. Features, design, export behavior, or delivery details may change as the product matures.

Nothing on this site should be interpreted as a promise of lifetime updates, perpetual hosting, or enterprise-grade support.

Support is intended to stay limited and practical.

For technical issues or feedback, contact support@logic-and-light.com.