Windows Vista®, Windows® 7, Windows® 8, Windows® 10¹, Pentium® IV 2 GHz or better or comparable AMD® Athlon processor, Monitor Resolution: 1152x864 or higher display, 2GB RAM (4 GB recommended), Available Hard Disk Space: Install requires approximately 5 GB², 64 MB Video RAM, DVD-ROM drive, Broadband Internet connection required³, keyboard and mouse. Macintosh® OS X 10.7 - 10.12¹, Intel® Core™ 2 Duo 2 GHz or better processor (2.4 GHz recommended), Monitor Resolution: 1152x864 or higher display, 2 GB RAM (4 GB recommended), Available Hard Disk Space: Install requires approximately 5GB², DVD-ROM drive, Broadband Internet connection required³, keyboard and mouse. ¹Administrator privileges are required to properly install the program on Windows Vista®, Windows® 7, Windows® 8, Windows® 10, and Mac® OS X. ²Downloadable content can require up to 36 GB of additional hard drive space. ³User is responsible for all Internet access fees and phone charges. Not compatible with projects made in Calendar Creator version 12.1 and earlier.