Stillinger's Dosage Calculator Download SDC for the platform your currently using. This software is in demonstration mode. A license key for SDC will be sent to you shortly. SDC for Apple Macintosh Size: 4.8 MB Version 3.0.0 for the Apple Macintosh. SDC for Microsoft Windows Size: 1.5 MB Version 3.0.0 for Windows. SDC Empty Database Mac Size: 100 KB This is a fresh new database for use on the Apple Macintosh. SDC Empty Database Windows Size: 111 KB This is a fresh new database for use on Microsoft Windows.