I need a straightforward invoicing solution that lets me build and send professional PDF invoices from either my Android phone or my Windows laptop without a steep learning curve. The app has to work smoothly on both platforms and keep the workflow identical so I can switch devices mid-job if needed. Invoice template essentials • Customer details • Service description • Parts and labor costs Branding must be baked in—our logo, company name, and contact details should appear automatically on every PDF so I never have to re-enter them. Core expectations • Create, preview, and email/save invoices as PDFs on Android and Windows • Simple interface tailored to a busy mechanic (no accounting jargon) • Data stored locally or in a lightweight cloud sync—whichever keeps setup painless • Easy way to update prices or add new services/parts without digging into code Deliverables 1. Installable Android APK and Windows executable or installer 2. Customizable invoice template with the fields and branding above 3. Brief user guide that shows how to add services/parts and send a PDF Hand-off isn’t complete until I can generate a sample invoice from each platform and the PDFs match in layout and branding.