Significant Digit Assistant for Microsoft Excel 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 Significant Digit Assistant for Microsoft Excel: The Significant Digit Assistant adds the significant digits function to Excel. It not only provides this function, but also automatically inserts the significant digit function into your cells for you. The Significant Digit Assistant is a must have feature for anyone doing scientific calculations in Excel.