You can download your own copy of soSIMPLE Calendar and run it by just double-clicking it on your desktop. soSIMPLE Standalone mode requires FileMaker Pro 13 or greater or FileMaker Go 13 or greater. Server-powered mode requires FileMaker Server 12 or greater and FileMaker Pro/Go 12 or greater. The demo download is fully featured with no restrictions except for a watermark on the calendar. The watermark can be removed by purchasing a license key.