You may install your license on multiple computers as long as you are the only person using the software at any given time.
REAPER’s licensing model is one of the most user-respecting in all of software. The lack of forced payment isn’t a loophole—it’s a test of character. For the price of a couple of pizzas or one guitar pedal (Discounted License) or a few hours of studio time (Commercial License), you get a DAW that rivals Pro Tools, Logic, and Cubase. Reaper License Key
Unlike many software companies, Cockos does not have a license server constantly checking your machine. You buy a key, download a file, and unlock the software indefinitely. Here is the exact process: You may install your license on multiple computers
Elias blinked. "The what?"