Synthetiq Invoices

Synthetiq Invoices is a fast, privacy-first invoice app for freelancers, trades, consultants, creators, and local small businesses.

Create clean invoices, manage clients, save reusable products and services, add VAT, set payment terms, and export professional PDFs from one simple app. Everything is designed to stay quick, practical, and private.

Version 4 introduces a more complete invoicing workflow:

• Quick invoice flow for faster customer and product selection
• Manual invoice builder for full control
• Product catalogue with reusable services, charges, categories, and prices
• Client profiles with company name, email, phone, notes, and default terms
• Sender and bank profiles for repeat use
• VAT support, VAT number, tax summary, and line-level VAT options
• Due dates with 7, 14, and 30 day payment terms
• Paid, unpaid, overdue, and draft invoice tracking
• Built-in PDF viewer with zoom and share support
• CSV exports for invoices, line items, and clients
• JSON backup import/export for local data transfer
• SYN assistant for local invoice help, catalogue preparation, and business questions

Synthetiq Invoices works locally on your device. No account is required. Your invoice data, customer records, catalogue, and settings stay under your control.

Use it to prepare invoices on site, keep repeat services ready, check customer payment status, export records for bookkeeping, and share polished PDFs with clients.