Yes. Every quote you create and download as a PDF is completely free, with no limits and no watermark.
A quote is a price estimate you send before work starts, so a client can review and approve the cost. An invoice is a request for payment after work is agreed or delivered. This tool labels the document "Quote" and adds a valid-until date instead of a payment due date.
No. Everything runs client-side in your browser. Your quote details, logo and totals never leave your device, and the PDF is generated and downloaded locally.
Yes. Upload a logo image and pick an accent colour, and both carry through to the live preview and the exported PDF.