We are a medium-sized Audit and Tax Advisory firm based in Cyprus, and we moved to Invoisin from another established invoicing and time-tracking platform that we had used for years. My main concern was preserving the history of invoices, clients, and time records that our accountant and our auditors need to be able to trace from prior years. That turned out to be the part that impressed me most. The import brought across our clients, projects, time entries, invoices, payments, and even the original invoice PDFs, and it showed me exactly what it was going to create or change before anything was written. I could review it, run it again, and clearly see what had been updated. Nothing had to be re-entered. Day to day, the things that matter to us are unglamorous, but they work: VAT is handled properly, invoices can be issued in more than one currency, we can generate statements of account to send to a client without editing them by hand, and exports to Excel and PDF are accepted by our accountant without questions. Our invoice numbering continued exactly as our books already ran, which sounds like a small thing until you are the one who has to explain a gap in a sequence. Invoisin is even better because, in case of a cancellation of services, it creates a credit note as well. The previous program didn’t have that feature. It also creates a formal Statement of Account document that shows all payments and outstanding invoices at any time, and it can automatically email the client both the Statement of Account and a payment receipt.