Learn about installing and using Quicken on multiple computers.
You can install Quicken on up to three computers running the same operating system, as described in their respective Quicken End User License Agreements. You do not have to purchase additional copies of Quicken to install it on the second and third computer.
Quicken was designed to run on WIndows or Mac OS X -- not both. You won't be able to move your files between the two.