Margin Desk
Revenue looks good. Contribution tells you more.

1. Extract the entire ZIP before use.
2. Open START.html in a current desktop browser. Keep the adjacent JS/CSS files together.
3. The initial view uses fictional sample inputs. Replace those before creating your own output.
4. Read QUICK-START.pdf and the in-app guide. Export JSON backups before clearing browser data.

No installation, account or internet is required to calculate. Browser storage availability varies; use JSON backups. Chrome on macOS receives the browser acceptance check for this release. Other browsers require your own sample check.

What it does: Compare product contribution after costs, transaction fees, return assumptions and acquisition spend.
Limits: Scenario arithmetic only. No live shop connection, current platform-fee feed or jurisdiction-specific tax engine.
Support: contact@jamesaisolutions.com
