Simple Invoice Cost: $29 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions Simple Invoice: A simple invoice program for small or medium sized business, as well as the sole entrepreneur. Easy and intuitive, creates invoices right in Microsoft Word before your eyes, inserts your logo and company information. Need Microsoft Word installed to run, any version Office 97 or later.